trig Identities 14

label Mathematics
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Solve the following equation for : 0<x<pie:sin2x=sinx. Select all that apply.

Dec 17th, 2014

pie/3 

sin2x - sinx = 0 
2sinxcosx - sinx = 0 
sinx(2cosx - 1) = 0 
Either sinx = 0 or 
2cosx - 1 = 0 
cosx = 1/2 
If sinx = 0, 
x = 180° 
If cosx = 1/2, 
x = 60°

Dec 17th, 2014

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Dec 17th, 2014
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Dec 17th, 2014
Jun 24th, 2017
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