in triangle ABC, Prove that sin2A/2+sin2B/2+sin2C/2 = 1 - 2sinA/2 sinB/2 sinC/2 - Maths -

Question

in triangle ABC, Prove that
sin2A/2+sin2B/2+sin2C/2 = 1 -
2sinA/2 sinB/2 sinC/2

Priyanka Kedia · Accepted Answer

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in triangle ABC, Prove that sin2A/2+sin2B/2+sin2C/2 = 1 - 2sinA/2.sinB/2.sinC/2