Question

If the sin 0° = 0, then which statement is true? (6 points) cos 90° = 1, because the cosine and sine are complements cos 180° = 1, because the cosine and sine are supplements cos 90° = 0, because the cosine and sine are complements cos 180° = 0, because the cosine and sine are supplements

Answer 1

Answer:

cos 90° = 0, because the angles are complements

Explanation:

Complementary angles are those angles whose angles are sum up to 90 degrees that we called right angles

Just like

one angle is 45 degrees

And, the other angles are also 45 degrees

So, the sum of both two angles are 90 degrees

Now if

sin 0° = 0

The  cos 0° = 0 as the angles are considered to be the complement

We used the equation as shown below:

$sin{\theta} = cos (90 - {\theta})$