Question: If = 1/4 and is in the second quadrant, find: (a) cos (b) tan (c) sin (2) (d) cos (2) (e)

If θ = 1/4 and θ is in the second quadrant, find:

(a) cos θ

(b) tan θ

(c) sin (2θ) 

(d) cos (2θ) 

(e) sin (1/2 θ)

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