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Question #415ce

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Dec 30, 2016

#5sin^2 x * "csc"^2x − 5sin^2 x#

#=5sin^2 x * 1/sin^2x − 5sin^2 x#

#=5 − 5sin^2 x#

#=5(1 − sin^2 x)#

#=5cos^2 x#

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