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sin x + sin y =1/4, sin x-sin y =1/5 then 4cot (x-y/2)=? a.5tan(x-y/2) b.5cot(x-y/2)

sin x + sin y =1/4, sin x-sin y =1/5 then 4cot (x-y/2)=?
a.5tan(x-y/2)
b.5cot(x-y/2)

Grade:11

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4404 Points
5 years ago
please check the question again

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