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JnluceroBest ResponseYou've already chosen the best response.1
the right side becomes sin θ by the difference identity for sine so θ = pi/4 or 3pi/4.
 one year ago

dumbcowBest ResponseYou've already chosen the best response.0
sin 2x = 2sinx cosx cos 2x = 2cos^2 1 > 2sinx cos^2 2sinx cos^2 + sinx = root2/2
 one year ago
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