Question
If the lengths of the sides of triangle are $3,5,7$ then the largest angle of the triangle is (a) $\frac{\pi}{2}$(b) $\frac{5 \pi}{6}$(c) $\frac{2 \pi}{3}$(d) $\frac{3 \pi}{4}$
Step 1
We know that the largest angle is opposite to the largest side of the triangle. Therefore, the largest angle is $\angle C$ opposite to side $c$. Show more…
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