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Prove that cot teta - cos teta / cot teta +cos teta = cosec teta -1 / cosec +1 |
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Answer» Do LIKE this (cot a - cos a) /( cot a + cos a) can be WRITTEN as ((cosa/ sina) -cosa) / ((cosa/sina)+ cosa) cosa (1/sina -1)/cos a(1/sina +1) ((1/sina) -1)/((1/sina+1) = (cosec a -1)/(cosec a +1) |
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