In a triangle ABC with usual notations, show that 2asin²(C/2) +2csin²(A/2) = a+b-c
Written on Dec. 8, 2018, 10:58 p.m.
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In a triangle ABC with usual notations, show that 2asin²(C/2) +2csin²(A/2) = a+b-c
Written on Dec. 8, 2018, 10:58 p.m.