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If A,B,C are angles of triangle,then prove that Sin.sinA/2+sin.sinB/2-sin.sinC/2=1-2cosA/2cosB/2sinC/2

Aiswarya , 6 Years ago
Grade 12
anser 1 Answers
RAHUL ROHILLA

Last Activity: 6 Years ago

Pleae mention what is Sin.sinA/2
is sinA/2 the angle for other sine.
if not, mention the angle

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