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OpenStudy (anonymous):
Determine the values of sin 2θ, cos 2θ, and tan 2θ, given tanθ = -7/24, and π/2 ≤ θ ≤ π. Here's a solution to this question, I just need an explanation on how this is determined
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OpenStudy (anonymous):
OpenStudy (cwrw238):
theta is in 2nd quadrant so sine is positive , tan and cos are negative |dw:1342994247386:dw|
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