TRIG
posted by Debbie .
Can someone please help me?
Use identities to find the indicated value for each angle measure.
sin θ = 12/13, cos θ > 0
Find cos (2θ).

TRIG 
MathMate
cos(2θ)
=cos²(θ)sin²(θ)
=(1sin²(θ))sin²(θ)]
=12sin²(θ)
Can you do the rest?
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