Cos x +cos y /cos y- cos x = cot (x+y/2)cot(x-y/2)
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Dear friend here is your answer...........
(cos x +cos y)/(cos y-cosx)
={2×cos(x+y/2)×cos(x-y/2)}/{2×sin(y+x/2)×sin(x-y/2)}
=cot(x+y/2)cot(x-y/2)[proved]
Hope it will help u
(cos x +cos y)/(cos y-cosx)
={2×cos(x+y/2)×cos(x-y/2)}/{2×sin(y+x/2)×sin(x-y/2)}
=cot(x+y/2)cot(x-y/2)[proved]
Hope it will help u
soh2:
please mark it as brainliest
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