trig (1 Viewer)

[cormglakes]

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

(0<x<pi)

 

[Qeru]

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]

[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]

@CMtutor you know a smart way to solve this?