SOLUTION: Prove: sin 2x csc x = 2 cos x
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Question 811472
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Prove:
sin 2x csc x = 2 cos x
Answer by
htmentor(1343)
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Using the trig identity, sin(2x) = 2sin(x)cos(x), and remembering that csc(x) = 1/sin(x), the LHS becomes:
sin(2x) csc(x) = 2sin(x)cos(x)/sin(x) = 2cos(x)