Question

In a right triangle ABC, C is the right angle. What does sinB equal?

A)

cos (90°-B)


B)

sin (90°-B)


C)

cos B


D)

Both A and C are correct

Answer 1

9514 1404 393

Answer:

A) cos (90°-B)

Explanation:

The sine of an angle is equal to the cosine of its complement.

sin(B) = cos(90° -B)