Question #8c8a9

1 Answer
Alan P.
Feb 6, 2018

(see below)

Explanation:

#{: ("LS",=2tan(x)(1-sin^2(x))," | ",), (,=2tan(x) * cos^2(x)," | ","Pythagorean Theorem"), (,=2(sin(x))/(cos(x)) * cos^2(x)," | ","by definition:" tan=sin/cos), (,=2 * sin(x) * cos(x)," | ","cancelation"), ("- - - - ",,,), (RS,=sin(2x)," | ",), (,=2 * sin(x) * cos(x)," | ","Double angle formula for "sin), ("- - - -",,,), (LS,=RS,,"QED") :}#

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