Answer:
Assuming angle N = 90°
a) ∠m = 48°
b) n = 20.18
c) k = 13.5
Step-by-step explanation:
a) ∠m = 180° - 90° - 42° = 48° because the sum of all three interior angles of a triangle equals 180°
b) cos 42 = 15/n
0.7431 = 15/n
n = 20.18
c) tan 42 = k/15
0.9004 = k/15
k = 13.5
