Question

3 In AABC, the complement of ZB is ZA. Which statement is always true? 1) tan ZA = tan B 2) sin A = sin/B 3) cos ZA = tan/B 4) sin ZA = COS ZB

Answer 1

Do you have a picture of the question?

The complement of ∠ B is ∠ A (that means ∠ B + ∠ A = 90º, and the angles ∠ B and ∠ A are cute angles )

A)

B)

C)

D) sin ∠ A = cos ∠ B

________________________________

the theorem is

" The sine of any acute angle = the cosine of its complement."

Answer

D