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7 sin2x - 14 sin x + 2 = -5

 Jun 17, 2019
 #1
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+2

Is your equation

 

this:       7 sin2( x )  -  14 sin( x )  +  2   =   -5

 

or this:       7 sin( 2x )  -  14 sin( x )  +  2   =   -5

 

(or something else)

 

???

 Jun 17, 2019

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