Question

If A, B and C are interior angles of a triangle ABC, then show that sin [(B + C)/2] = cos A/2.

nah...
mood nahi hai...
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@PagalUser_mind ur language daat tod ke hath mai de dunga... ​

Answer 1

heya.You're very famous.. I guess you don't know me..I am the bestie of The user Ismat ( I hope so you know the user) & the sister of Aish bro Riya.

If you don't know the user, it's fine..I think I am disturbing..