Question

Which pair of angle measures satisfy the condition sin J = cos K?
A. 15 deg.,45deg
B. 45deg, 90deg
C 60deg ,30deg
D. 80deg ,100deg
E. 70deg, 110deg

Answer 1

sin J = cos K
sin J = cos (90 - J)

So, K = 90 - J

Therefore, 60 deg, 30 deg satisfy the condition sin J = cos K.