If `A+B+C=180^0` , prove that `sin2 A+sin2 B-sin2C= 4cos A cos Bsin C`
42 views · Published 12 October 2018 · 3:36 · Indexed 2 October 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW If `A+B+C=180^0` , prove that `sin2 A+sin2 B-sin2C= 4cos A cos Bsin C`
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