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dxQ. 13. (A) Evaluate-1- cos x |
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Answer» Explanation: ∫1/1+cosxdx=∫1−cosx(1+cosx)(1−cosx)dx =∫1−cosx1−cos2xdx =∫1−cosxsin2xdx =∫1sin2xdx−∫cosxsin2xdx =∫csc2xdx−∫cotxcscxdx =−cotx+cscx+C |
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