If sinθ=0.2 and 0°<θ<90°, find the value of cosθ.

Question

A) 0.96

B) 0.98

C) 0.02

D) 0.2

Answer 1

Use the Pythagorean Identity:

sin²(θ) + cos²(θ) = 1

(0.2)² + cos²(θ) = 1

Solve for cos(θ). Remember that the cosine is positive in the first quadrant (0 to 90 degrees).