Ex 7.3, 13 - Integrate cos 2x - cos 2a / cos x - cos a - Ex 7.3

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  1. Class 12
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Ex 7.3, 13 cos 2 cos 2 cos cos cos 2 cos 2 cos cos = 2 cos 2 1 2 cos 2 1 cos cos = 2 cos 2 1 2 cos 2 + 1 cos cos = 2 cos 2 2 cos 2 + 1 1 cos cos = 2 cos 2 cos 2 cos cos =2 cos 2 cos 2 cos cos =2 + =2 + =2 + =2 + 1 . = + +

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