Math, asked by S0hriyashrissri, 1 year ago

Find the largest angle of a triangle with sides 3 5 and 7

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Answered by rdahin

0

largest angle is opposite largest side that is side measuring 7
CosA=b2+c2-a2/2bc=9+25-49/2*3*5=-1/2
hence A=120 degree

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