Evaluate the expression
cos(30°)=

Answers

Answer 1

Answer:

[tex]cos (30) =\sqrt{\frac{3}{2} } =0.8660[/tex]

Step-by-step explanation:

By using the cos square identity in trigonometry i.e., cos2ϴ = 1 – sin2 ϴ, we can evaluate the exact value of cos(33 ). For calculating the exact value of cos(∏/6), we have to substitute the value of sin(30°) in the same formula.

cos(30°) = √1 – sin230°

The value of sin30° is 1/2 (Trigonometric Ratios)

cos(30°) = √1 – (1/2)2

cos(30°) = √1 – (1/4)

cos(30°) = √(1 * 4 – 1)/4

cos(30°) = √(4 – 1)/4

cos(30°) = √3/4

Therefore, cos(30°) = √3/2

Answer 2

Step-by-step explanation:

cos 30° is √3 /2

Also refer to the image attached

MARK ME AS BRAINLIST
Evaluate The Expressioncos(30)=

Related Questions

What is the area of the figure?

Answers

20m ^2

Explanation:
The top part be be cut into 2 2•2 triangles. A = 4 for both of them
And the rest is a 4•4 square, so A = 16.
4 + 16 = 20

Hope this helps!

PLEASE HELP

Find the Difference

(3 - 2.1z) - (1.7w + 9) - (-8 - 3z)​

Answers

Answer:

1 dfrac 20+9z-17w I think this is your answer

please help i will give crowns

Answers

10/3 which is the same as 3 1/3

Answer:

10/3 or 3 1/3

5/1 · 2/3 = 10/3

You can't simply this anymore farther.

Also the proper form of 10/3 is also 3 1/3.

What is four multiplied by fifteen

Answers

Answer:

60

Step-by-step explanation:

4x15=60

Answer:

60

hope this helps

have a nice day:)

Madelyn hikes 190.5 meters up a mountain. If she is 62% of the way up, how tall is the mountain? Round to the nearest whole meter.

Answers

Answer:

307 meters tall

Step-by-step explanation:

190.5 / 62 = x / 100

19050 / 62 = 307

If it is rounded up.

to lease a new car, you must make a dowm payment when you sign the lease, then pay $199 per month . six months after signing his lease, Mr Scott had paid $2,694. write and solve an equation to find the total amount he will have paid after 3 years.

Find the equation of the line passing through point (1,-5) and perpendicular to y=1/8x+2

Answers

Answer:

y=8x-13

Step-by-step explanation:

When you're finding a perpendicular line, you take the opposite of the slope. The slope in this equation is 1/8, so a perpendicular line will have the slope of 8. So we already know y=8x+b.

Plug in your x and y values from the ordered pair and you get -5=8(1)+b. 8×1 is just 8, so it's -5=8+b. Subtract 8 from both sides and you get -13=b.

Y=8x-13

This is right I solved it

need help plz ............................................ .

Answers

Answer:

(x+5)+(x-10)+(x-75)+125=360

3x+45=360

3x=315

x=105

On a distance-time graph,a horizontal straight line corresponds to motion at __+

Answers

On a distance time graph, a horizontal straight line corresponds to motion at zero speed constant speed increasing speed decreasing speed.

I need help fast please I hope this is easier for yall

Answers

Answer:

[tex]33\frac{1}{3} ft^2[/tex]

Step-by-step explanation:

[tex]8\frac{1}{3}\times{4}=32\frac{4}{3}=33\frac{1}{3} ft^2[/tex]

Answer:

33 1/3 ft squared

Step-by-step explanation:

Annika needs to sell at least 25 boxes of Girl Scout cookies to get a new badge she has already sold 4 boxes how many more does she need to sell

one step inequality word problems ​​

Answers

Step-by-step explanation:

21 is the answer cause if she sold 4 already thats equal 25 boxes of cookies

A bird of species A, when diving, can travel six times as fast as a bird of species B top speed. If the total speeds for these
two birds is 259 miles per hour, find the fastest speed of the bird of species A and the fastest speed of the bird of species B.

What is the fastest speed of the bird species B in miles per hour and the fastest speed of the bird of species A in miles per hour

Answers

Answer:

37 mph, 222 mph

Step-by-step explanation:

Let the speed of bird of species A is x and speed of B is y.

The equations:

x + y = 259x = 6y

Substitute and solve for y:

6y + y = 2597y = 259y = 259/7y = 37

Find x:

x = 6*37 = 222

[tex]x[/tex]will be the speed of species b and [tex]4x[/tex] will be the speed of species a:

[tex]x + 4x = 180[/tex]

[tex]5x = 180[/tex]

[tex]x = \frac{180}{5}[/tex]

[tex]x = 36 \: m/h[/tex]

If species b has a speed of [tex]36 [/tex]m/h, the speed of species a is [tex]4[/tex]times that:

[tex]4 \times 36 = 144 m/h[/tex]

Answer :—

[tex]A = 36 \: m/h [/tex]

[tex]B = 144 \: m/h[/tex]

a bag contains 10 yellow marbles 14 Blue Marble 7 red marbles and 9 green marbles. jack reaches in and grabs a marble, then without Jack replacing his marble, Anna reaches in and grabs a marble. what is the probability of a blue and a red blue marble being pulled out?​

Answers

Answer:

here the answer is 9/29...

Is the question asking to see if x = 1, y=-2, and z=2 by solving the three equations?

Answers

Answer:

2 × 1 +2 +2×2 =8

2+2+4=8

8=8

3×1 +3× -2 + 4×2 =5

3-6+8=5

5=5

1+2 × -2 +2 = -5

1-4+2= -5

-5 = -5

calculate simple interest on R4400 at 4% per annum for 7years.​

Answers

Answer:

Simple interest=PRT/100

P=4400

R=4%

T=7

SI=4400×4×7/100

SI=44×4×7

SI=1232

When three times a number is decreased by 7, the result is 20. What is the number?
The number is?

Answers

Answer:

The number is 9

Step-by-step explanation:

• Let the number be x

[tex]{ \tt{3x - 7 = 20}} \\ [/tex]

» Add 7 to either sides following addition rule of equality:

[tex]{ \tt{(3x - 7){ \red{ + 7}} = 20{ \red{ + 7}}}} \\ { \tt{3x = 27}}[/tex]

» Divide either sides by 27:

[tex]{ \tt{ \frac{3x}{ \blue{3 }} = \frac{27}{ \blue{3}} }} \\ \\ { \tt{x = 9}}[/tex]

3x-7=20
3x=27
x=9

number is 9

The volume of the cylinder is 1847.3 in3. Determine the diameter of the cylinder to the nearest tenth.

Answers

Answer:

184 is the diameter

Step-by-step explanation:

The first step in solving this eqaution for x uses _ property 2(x + 7) + 3x = 12

Answers

Answer:

2×x×7+3x=12

2x+14+3x=12

5x+14=12

5x=12-14

5x=-2

Divided Both Sides By 5

X=-2/5

Cade rode 1 3/5 miles on Saturday and 1 3/4 miles on Sunday. How far did he ride on the two days?

Answers

Answer:

3.35

Step-by-step explanation:

just adding fractions

whats 9 plus 10 in this proplem

Answers

20 should be correct

150% of what number is 120

Answers

Answer:

x = 80

Step-by-step explanation:

We have, 150% · x = 120

or, 150/100 · x = 120

Multiplying both sides by 100 and dividing both sides by 150,

we have x = 120 · 100/150

x = 80

If you are using a calculator, simply enter 120×100÷150, which will give you the answer.

[RevyBreeze]

Answer:80

Step-by-step explanation:

we have,

150x/100 = 120

x = 120 x 150/100

x= 80

Kim is playing an online trivia game. She has 25 points and earns 1 point for each correct answer. She will advance to the next round if the score is 34 points. Which inequality can Kim use to find how many more questions she must answer correctly to advance to the next round

Answers

Answer:

the answer is b I'm pretty sure

Answer:

1x 25< or equal to34

Step-by-step explanation:

PLEASE HELP WITH RIGHT ANSWER FOR BRAINLIEST!!

Answers

To make a perfect square of v² - 14v , add c such that:

We have:

a = 1 b = - 14 c = b²/ (4a) = (-14)²/ (4 × 1) = 49

⇒ v² - 14v + 49 = (v - 7)(v - 7) = (v - 7)²

Answer: 49

OK done. Thank to me :>

A pigmy rattlesnake has an average length of 18 in., while
a Western diamondback rattlesnake averages a length of
5 ft 6 in. What is the ratio of the length of a pigmy rattlesnake
to the length of a Western diamondback rattlesnake?

Answers

Answer is down below.

Step-by-step explanation is in the photo below.

please help this is for my son and i dont know it

Answers

Answer:

8 cookies left to be baked.

Step-by-step explanation:

Together both of them bakes = (1/3) + (2/5)

                                                 =  [tex]\frac{5}{15} +\frac{6}{15}[/tex]

                                                 = [tex]\frac{11}{15}[/tex] cookies.

So they have baked: (11/15) * 30 = 22 cookies together.

cookies left to be baked: 30 - 22 = 8 cookies.

Answer:

8 cookies

Step-by-step explanation:

Cookies needed - 30.

Len bakes:

30*1/3 = 10

Shailesh bakes:

30*2/5 = 12

Remaining to bake:

30 - 10 - 12 = 8

Khan uses 78 feet of fence to make a rectangular pen for his pet rabbit. The length of the pen is 25 feet. What is the width of the rectangular pen?

Answers

The width of the rectangular pen is equal to 14 feet.

Gary gets a bonus $20 for every computer he sells over and above his quota of 10 per week. If he
sells n computers in a week and n > 10 , write an expression for Gary’s bonus in that week
(in expanded form).

Answers

The answer is 20n-200
I'd appreciate it if you gave brainliest and liked my answer!

Answer:

The inequality that describes this problem is , and the minimum number of computers he must sell is 25.

Step-by-step explanation:

Since there is no restriction on the number of computers he must sell, an inequality can help us describe the situation.

Writing the inequality.

Let x be the number of computers he sells the next month, since he receives a bonus of $100 per computer he sells the total amount he will make for x computers is

And since he wants to make $2,500 in bonuses, the inequality that describes that situation is

Solving the inequality.

In order to find the exact number of computers he must sell, we need to solve for the inequality.

Since 100 is multiplying to x, in order to move that 100 to the other side, we need to apply the inverse operation to multiplication, which is division. We can then divide both sides by 100

So then we can simplify to get

Thus the minimum number of computers he must sell is 25.

Question 2 of 10, Step 1 of 1
One integer is 9 more than another. Their product is 90. Find the integers.
Answer
How to enter your answer (opens in new window)
smaller integer

Answers

Answer:

6 is the smaller integer and 12 is the larger

Step-by-step explanation:

yeah just guess and check

What are the zero(s) of the function f(x) =4x2-36x. —————————————
X-9
?

A.x= -9
B.x=0
C.x=9
D.x= 0 and x = 9

Answers

Answer:

x=0 true

....................

Answer:

B) x=0

Step-by-step explanation:

[tex]f(x)=\frac{4x^2-36x}{x-9}\\ \\0=\frac{4x^2-36x}{x-9}\\ \\0=\frac{4x(x-9)}{x-9}\\ \\0=4x\\\\0=x\\\\x=0[/tex]

This is just a linear function in disguise, so there's only one solution

Calculate the measures of x y z in the diagram given beloe​

Answers

Y=180°-70°=110°

Z=180°-y
=180°-110°
=70°

X=y
X=110°

Step-by-step explanation:

Solution,

∠IDJ = 70° ( being alternate angle in AB || CD )

∠ IDJ + x = 180° ( being co-interior angle in EF || GH )

or , 70° + x = 180°

or , x = 180° - 70°

x = 110°

Again,

∠BLH = ∠CKG ( Being alternate angle in AB || CD )

y = 110°

Finally ,

z + y = 180° ( Being adjacent supplementary angle )

or , z + 110° = 180°

z = 70°

Thus , x = 110 ° , y = 110 ° and z = 70°

Determine whether the following statement is true or false.
The ordered pairs (8,- 9) and (-9,8) name the same point.

Answers

Hi!

I can help you with joy!

Are these ordered pairs the same? Do they name the same point?

(8, -9) and (-9,8) are our points.

The x-coordinate of one point is 8, and the x-coordinate of the second point is -9.

The y-coordinate of the first point is -9, and the y-coordinate of the second point is 8.

Thus, these 2 ordered pairs do not name the same point.

The statement is false.

I hope this helps!

Ask me if you have any questions or doubts.

~[tex]\bf{^M^A^G^I^C^A^L \:erutaN[/tex]

Enjoy your day! :)

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