Question

Which pair of angles has congruent values for the sin x° and the cos y°? (4 points)

Select one:
a. 40°; 140°
b. 40°; 80°
c. 40°; 50°
d. 40°; 40°

Answer 1

the answer is c

Explanation:

Answer 2

Congruent values for sin x° and cos y° has angles: C) 40°, 50°.
The reason is because : cos x° = sin ( 90° - x° ), or x° and y° must be complementary angles ( x° + y° = 90° ).
So: cos 40° = sin 50° and cos 50° = sin 40°.