∫(cos^3x/sin^2x)dx
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∫(cos^3x/sin^2x)dx
∫(cos^3x/sin^2x)dx
∫(cos^3x/sin^2x)dx
∫(cos^3x/sin^2x)dx
=∫[(1-(sinx)^2]/(sinx)^2dsinx
=∫[1/(sinx)^2-1]dsinx
=-1/sinx-sinx+C
∫(cos^3x/sin^2x)dx
=∫[(cosx)^2/(sinx)^2]*cosxdx
=∫[(1-(sinx)^2]/(sinx)^2dsinx
=∫[1/(sinx)^2-1]dsinx
=-1/sinx-sinx+C
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∫(cos^3x/sin^2x)dx
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