Find sin 2x, cos 2x, and tan 2x from the given information. sinx=(5/13), x is 1

Anonymous
timer Asked: May 15th, 2015
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Question Description

Find sin 2x, cos 2x, and tan 2x from the given information.  
sinx=(5/13), x is 1

Tutor Answer

Swetha prabha C.
School: UIUC

sin x = 5/13

So, cos x = 12/13

sin(2x) = 2 sinx cosx = 2 * (5/13) * (12/13) = 120/169

cos(2x) = 1-2*sq(sinx) = 1-2*(25/169) = 119/169

tan(2x) = sin(2x)/cos(2x) = 120/119

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