Find the Value
A.
B.
C.
D.

C

Step-by-step explanation:

Using the trig. identity

sin²x + cos²x = 1 ⇒ cosx = ±

Here sinθ = , thus

cosθ = ± = ± = ± = ±

Since 0 ≤ θ > 90 then cosθ > 0 , thus

cosθ = → C