If 0 ≤ θ ≤ 90 o, and sin(2θ + 50 o) = cos(4θ + 16 o), then what is the

| If 0 ≤ θ ≤ 90o, and sin(2θ + 50o) = cos(4θ + 16o), then what is the value of θ (in degrees)?

A. 10o

B. 8o

C. 4o

D. 12o

Right Answer is: C

SOLUTION

We are given that : sin(2θ + 50o) = cos(4θ + 16o)

And also sinθ = cos( 90° – θ )

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