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Grade: 12 
        
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
2 years ago

Answers : (1)

RAHUL ROHILLA
askIITians Faculty
873 Points 
							Pleae mention what is Sin.sinA/2
is sinA/2 the angle for other sine.
if not, mention the angle
2 years ago
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