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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

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

Grade:12

1 Answers

RAHUL ROHILLA
askIITians Faculty 873 Points
4 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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