Plz solve this question
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A+B+C=π
A=π-(B+C)
divide with 2 on b/s
A/2=π\2-(B+C)/2
applying sin on b/s
sinA/2=sin(π-(B+C))/2
sinA/2=cos(B+C)/2
A=π-(B+C)
divide with 2 on b/s
A/2=π\2-(B+C)/2
applying sin on b/s
sinA/2=sin(π-(B+C))/2
sinA/2=cos(B+C)/2
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