In ∆QRS, q =370 cm, r =910 cm and

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asked Jun 6, 2023 110k views

3 votes

In ∆QRS, q =370 cm, r =910 cm and

Mathematics
college

Anshita Singh asked

by Anshita Singh

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using cosine rule

$\begin{gathered} s^2=r^2+q^2-2rq\cos S \\ s^2=910^2+370^2-2*910*370\cos 31 \\ s^2=828100+136900-336700*0.8571673007 \\ s^2=965000-288608.230146 \\ s^2=676391.769854 \\ s=\sqrt[]{676391.769854} \\ s=822.430404262 \\ s=822\operatorname{cm} \end{gathered}$

In ∆QRS, q =370 cm, r =910 cm and-example-1

Palme answered Jun 13, 2023

by Palme

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