Question: If tan = -2 and 3/2 < < 2, find the exact value (a) sin (b) cos (c) sin(2) (d) cos(2) (e) sin(1/2 )

If tanθ = -2 and 3π/2 < θ < 2π, find the exact value 

(a) sinθ 

(b) cosθ

(c) sin(2θ)

(d) cos(2θ)

(e) sin(1/2 θ) 

(f) cos(1/2 θ)

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