All categories

2 years ago

Please help me thank you

Mathematics

2 answers:

son4ous [18]2 years ago

8 0

answer is c ..........

kupik [55]2 years ago

3 0

Answer:

C) Sin 2theta = root3/2, cos 2theta = 1/2

Step-by-step explanation:

If theta is between 0 degrees and 90 degrees, that means it's in the 1st quadrant.

If you look at a labeled unit circle, the only value where sin (y-value) of theta is at pi/6 radians. That means, theta equals pi/6. So 2theta is just pi/6 * 2 which is pi/3. Sin (pi/3) is equal to root3/2.

We know 2theta is pi/3, so the cos (x-value) of 2theta on a labeled unit circle is 1/2, which means cos 2theta is 1/2.

You might be interested in

What is the distance from point (– 1, 3) to the line 3x – 4y = 10?

natta225 [31]

Answer:

5 units

Step-by-step explanation:

The distance from a point (m, n ) to the line Ax + By + C = 0 is given by

d = $\frac{|Am+Bn+C|}{\sqrt{A^2+B^2} }$

For the point (- 1, 3 ) , with m = - 1 and n = 3

3x - 4y = 10 ( subtract 10 from both sides )

3x - 4y - 10 = 0

with A = 3 , B = - 4 , C = - 10

d = $\frac{|3(-1)+(-4)3-10|}{\sqrt{3^2+(-4)^2} }$

= $\frac{|-3-12-10|}{9+16}$

= $\frac{|-25|}{\sqrt{25} }$

= $\frac{25}{5}$

= 5

5 0

2 years ago

Gente como resolver problemas sobre sistemas lineares ?? me

Bond [772]

3x+5y=16 is linear equation........

5 0

2 years ago

Alayaa crashed her car through a fence, ran over a garbage can and ran into a tree. The fence will cost $550 to repair, $50 to r

hodyreva [135]

She'll have to pay 20,605

3 0

2 years ago

How can I get help with linear equations with fractions? I dont remember how to solve

xz_007 [3.2K]

Answer:

to find the missing number, compare both sides of the equation. If the variable terms are the same and the constant terms are different, then the equation has no solutions.

Step-by-step explanation:

to find the missing number, compare both sides of the equation. If the variable terms are the same and the constant terms are different, then the equation has no solutions.

3 0

2 years ago

2 4/7 divided by 1 3/6 =

Rudiy27

Answer:

Step-by-step explanation:

2,57 divided by 1.5 equals

1.713

7 0

9 months ago

Read 2 more answers