Math, asked by syednasreen243, 2 months ago

3. If A,B,C are angles in a triangle, then prove that
() sinỪA +sin?B - sin?C = 2 sin A sin B cos C.
-(i) cos’A + cos²B - cos C = 1 - 2 sin A sin B cos C.
If A+BIC-
then prove that

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Answered by sahilsharma705011

0

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