solution of x when cosx-sin3x =cos2x
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cos x-sin 3x =cos 2x
cos x - sin (90-3x)= cos 2x
cos x -cos 90-3x =cos 2x
x - 90- 3x = 2x
-90= 2x +3x -x
-90= 4x
x = -90/4
x = -22.5
cos x - sin (90-3x)= cos 2x
cos x -cos 90-3x =cos 2x
x - 90- 3x = 2x
-90= 2x +3x -x
-90= 4x
x = -90/4
x = -22.5
Mayuree:
thanx a lot....
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