Math, asked by adharshm9735, 1 year ago

In ∆abc, if a = 7, b =5 and c=3. determine the greatest and smallest angles of the triangle.

Answers

Answered by MrMoony

Using cosine rule,
cosA=(b square plus c square minus a square) divided by 2bc
Greatest =cos inverse(-1/2) =120
Least=cos inverse(13/14)
Thus the answer is cos inverse

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