Biểu thức sin²x + cos²x có giá trị bằng ?

Answers

Answer 1

we have sin²x + cos²x = 1

ok done. Thank to me :>


Related Questions

find the dimensions of the right circular cylinder of maximum volume that can be inscribed in a sphere of radius a

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Answer:

d.

took the test

Step-by-step explanation

A movie store sells DVDs for $11 each. What is the cost, C, of n DVDs?

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C=11 x N I wanna say but try and confirm this

Graph: f(x) = 4 to the power of 4

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Answer:

how am I supposed to graph?

Step-by-step explanation:

Under his cell phone plan, Josiah pays a flat cost of $37 per month and $3 per gigabyte. He wants to keep his bill at $43.60 per month. Write and solve an equation which can be used to determine xx, the number of gigabytes of data Josiah can use while staying within his budget.

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The number of gigabytes of data Josiah can use while staying within his budget is 2.2 gigabytes.

Flat costs and Variable cost

The total amount of money that can be spent on the cell phone plan is the sum of the flat cost and the variable cost.

Total cost = flat cost + variable cost

Determination of the equation required to solve for the gigabytes needed

The flat cost is the cost that remains constant each month. The variable cost is the cost that increases by gigabyte used.

$43.60 = $37 + $3x

The gigabytes needed

In order to determine the value of x, combine similar terms together

$43.60 - $37 = $3x

6.6 = $3x

Divide both sides by 3

6.6/3 = x

x = 2.2 gigabytes

To learn more about flat costs, please check: https://brainly.com/question/25879561

Write the decimal as a fraction in simplest form.
5. -18.04

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Answer:  - [tex]\frac{451}{25}[/tex]

Step-by-step explanation:

Convert 4.5 to a mixed number help for brainlist with explanation!

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Answer:

4 1/2

Step-by-step explanation:

the 4 means that the whole number will be 4. .5 means that there is one half of 1, so 1/2 will be the decimal

we can also write the decimal as an improper fraction.

45/10

then, reduce the fraction by 5

9/2

2 can go into 9 four times, so that is our whole number. 2 times 4 is 8, so there is 1 left in the numerator.

4 1/2

It’ll be 45/10!!!
With 4 being the whole number you multiple by the denominator which .5 being written as a fraction would be 5/10. With 4 multiples by 10 being 40, you then add the numerator 5 to get 45 and you write it as a fraction over 10.

PLS HELP ASAP ILL GIVE BRAINLKEST PLS ANSWER ITS FOR TOMORROW TEST PLSSS THANKS

Answers

A number "n" is a minimum of 6 .

n is greater than (>) or equal to (=) 6 .

n can be 6 or more.

Isolate the x

x + y/3 = 5

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Answer:

x = 5 - y/3

Step-by-step explanation:

4 * 4 * 4 * 5 * 5
help please

Answers

Answer:

=1600

Step-by-step explanation:

=4*4*4*5*5

=16*4*25

=64*25

=1600

Hope this helps, have a nice day/night! :D

+3 - (+7)
Can someone help pls!?​

Answers

Answer:

Step-by-step explanation:

+3 - (+ 7) = 3 + (-7) = -4

Both integers have different sign. So, subtract and  the result will have the sign of bigger number. Here bigger number is 7 and sign of 7 is (-). So, answer will be (-4)

answer this questtion​

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Answer:

69 degrees

Step-by-step explanation:

Answer:

21gb

Step-by-step explanation:

did the test

please help! thanks!

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Yes, it is.
2(3) - 3(2) = 0
2(3) + 2 = 8

can someone please help me please

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It might be B I might not be right

Answer:

Letter b

Step-by-step explanation:

because it is

[tex]-------------------[/tex]
12+2=

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The answer would be 14.

What is the equivalent expression to 0.18 - 22/49

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Answer: -695/2450 or -0.26898
Explanation:

Use a number line to add or subtract.
3−(-1)=

Answers

Answer:

4

Step-by-step explanation:

rule 1 positive + positive= positive

rule 2 negative plus negative = negative

Andrew owns stock in Hyren Airlines and as a result gets paid dividends worth $539. 70 every year. If Andrew owns 105 shares of Hyren Airlines, how big is the dividend each share yields? a. $3. 60 b. $2. 78 c. $5. 67 d. $5. 14.

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Answer:

the answer to your question is B $3.60

Help anyone please and thank you

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the answer would 1/4 of a gallon

simply because 4 of the containers equals one gallon

HELPP LIKE ILL GIVE 25 PTS!

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[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

Domain of f(x) ~

[tex] - 6 \leqslant x \leqslant - 1[/tex]

Range of f(x) ~

[tex] - 5 \leqslant x \leqslant - 3[/tex]

Domain of f(x): -6 ≤ x ≤ -1

Range of f(x): -5 ≤ x ≤ -3

Can someone help? (NO LINKS!)
Thank You!

Answers

Answer:

the answer is C

Step-by-step explanation:

that's what it is equivalent to

what are some different ways to write c=2.95g

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You could write it as 0.00295kg, or 0.006503637 pounds. Depends on what your looking for.

does the equation have roots? if yes, find them.

x^2=32

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Answer:

[tex]x=\pm 4\sqrt2[/tex]

Step-by-step explanation:

Left hand side is a positive number. Right hand side is positive. The equation should have real roots. (worst case, the root would be complex, but let's not open that can of worm)

Let's start noticing that [tex]32 = 2^5 =4^2\cdot 2[/tex] and then take the square root of both sides, remembering that we need to take a plus or minus sign ( both a and -a squared give the same result!)

[tex]x= \pm \sqrt{4^2\cdot2}=\pm 4\sqrt2[/tex]

a transversal shown below.
True
or
False

Answers

Answer:

true

Step-by-step explanation:

because i just finished doing this in geometry

Patricia has $12 to spend at an arcade. The arcade charges $6 admission and $3 per hour to play as many games as she wants. Which inequality can be used to find any possible number of hours, X, Patricia can play games without spending more than $12

A) 6+3x < 12

B) 6-3x < 12

C)12<6+3x

D) 12 < 6-3x


***All of them have a line underneath the <****

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Answer:

Step-by-step explanation

c

find the angles marked with with letters​

Answers

Answer:

<A=67⁰

<B=22⁰

<C=42⁰

Mark me BRAINLIEST

Answer:

a = 67° , b = 26° , c = 69°

Step-by-step explanation:

a and 67° are corresponding angles and are congruent , so

a = 67°

------------------------------------------------------

The triangle on the left has 3 equal sides thus is equilateral with 3 congruent angles of 60°

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles , that is

b + 34° = 60° ( subtract 34° from both sides )

b = 26°

---------------------------------------------------

The vertex of the triangle and 42° are vertically opposite and are congruent

vertex = 42°

The triangle has 2 equal legs and is isosceles with 2 base angles congruent.

c = [tex]\frac{180-42}{2}[/tex] = [tex]\frac{138}{2}[/tex] = 69°

New Brunswick middle school had 1,250 students last year this year they had a 15% increase. how many students are in new Brunswick middle achool this year?​

Answers

Okay so 1250x0.15=187.5

1250+187.5=1437.5


1437.5 is your final answer

Six ounces of a nutrition shake provides 2 grams of protein. Will 24 ounces of the drink provide 10 grams of protein? Explain

Answers

Answer:

(Hope this helps can I pls have brainlist (crown)☺️)

Step-by-step explanation:

In pic

Triangle DEF is a scale drawing of triangle ABC.
What is the scale factor?

Answers

Step-by-step explanation:

every line uses the same factor.

a factor is something you multiply with.

so, what was the factor that turned 9 into 3 ?

9 × x = 3

x = 3/9 = 1/3

that is the scale factor.

I don’t know what I got wrong on this problem. Can someone please help me?

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Answer:

x is equal to the length of that side of the triangle, the x is written on (the distance between the log ride and the pirate ship). You can visually see that both of the long sides of that triangle are equal. See how they look the same? The other side of that triangle (the distance between the Big Top Tent and the Pirate Ship) has a given length written, it says "25 m." So the x side, which is equal is also 25 m. The value of x is 25 m.

Step-by-step explanation:

[Please, help me. I need it quickly]
If cosA+sinA=√2, then prove A=45°.

Answers

Step-by-step explanation:

Start by squaring both sides

cosA+sinA=[tex]\sqrt{2}[/tex]

[tex]cos^2A+2cosAsinA+sin^2A=2[/tex]

Apply Trig identity

[tex]cos^2x+sin^2x=1[/tex]

2cosAsinA+1=2

2cosAsinA=1

Apply Trig Identity

2cosxsinx=sin(2x)

sin(2A)=1

2A=arcsin1

arcsin(1) is a known value [tex]\frac{\pi }{2}[/tex]

2A=[tex]\frac{\pi }{2}[/tex]

A=[tex]\frac{\pi }{4}[/tex]

[tex]\pi[/tex] [tex]radians=180^o[/tex]

A=[tex]\frac{180^o}{4}[/tex]=[tex]45^o[/tex]

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