S = rθ
4.2 = 1*θ
The central angle (θ) is 4.2 radians.
Answer:
Cos 74°= Sin 16°
Sin 20°= Cos 70°
Sin A°=Cos (90°- A°)
Step-by-step explanation:
This is because the three pairs are complementary i.e they add up to 90° and in trigonometric ratios, complementary ratios are equal.
Answer:
I believe it’s C but not 100% sure
Step-by-step explanation: