1.

हि () AABC Hsin का मान होगादब% दर जज -छि व- (i) sin3 +sin (i) sinyAkt bte (i) cos रु (ivy & & कोई नहीं

Answer»

In a ∆ , A + B + C = 180°

A + B = 180 - C

(A + B)/2 = 90 - C/2

sin [ (A + B)/2]

sin ( 90 - C/2)

cos (C/2)

iii) option



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