find x .if,cos^2x+5sinx .cosx=3
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cos^2x + 5sin(90-x)cosx = 3
cos^2x + 5cosx.cosx = 3
cos^2x + 5cos^2x = 3
6cos^2x = 3
cos^2x = 3/6
cos^2x = 1/2
cosx = √1/2
cosx = 1/√2
x = 30°
cos^2x + 5cosx.cosx = 3
cos^2x + 5cos^2x = 3
6cos^2x = 3
cos^2x = 3/6
cos^2x = 1/2
cosx = √1/2
cosx = 1/√2
x = 30°
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