Show that tan theta cos theta is equal to sin theta?

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Answer 1 · 2018-05-28T10:14:25

See below

#tanthetacostheta=sintheta#

#LHS#
#=tanthetacostheta#

#=sintheta/costheta xx costheta#

#=(costhetasintheta)/costheta#

#=(cancel(costheta)sintheta)/cancel(costheta)#

#=sintheta#

#=RHS#