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cormglakes

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how do u find x : cos^2(x)-sin^2(3x)+cosxsin5x=0

(0<x<pi)
 
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Qeru

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how do u find x : cos^(2)x-sin^2(3x)+cosxsin5x=0

(0<x<pi)
[is it meant to be sin^2{x} or sin^2{3x}? I dont see how you could solve the equation in it's current state (I tried product to sum, then triple angle identity but thats so grindy).
 

cormglakes

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[is it meant to be sin^2{x} or sin^2{3x}? I dont see how you could solve the equation in it's current state (I tried product to sum, then triple angle identity but thats so grindy).
sorry let me fix that
 

Qeru

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@CMtutor you know a smart way to solve this?
 

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