Question

Solve the equation sin (x° - 20°) = cos 42° for x, where 0 < x < 90.

A. 62
B. 22
C. 68
D. 28

Answer 1

well cos(42) = sin(90 - 42)

or cos(42) = sin(48)

snow you can equation

sin(x -20) = sin(48)

and solve

Answer 2

thanks