The Cosine Rule

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Question 17

A triangle has vertices $P$ , $Q$ , and $R$ . Side $PQ\,$ has a length of 15 cm, and side $PR\,$ has a length of 22 cm. The angle $\angle QPR\,$ is $58∘58^\circ$ .

Calculate the length of the side $QR$ .
Give your answer to 3 significant figures.

[3]

The Cosine Rule

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Question 17

A triangle has vertices $P$ , $Q$ , and $R$ . Side $PQ\,$ has a length of 15 cm, and side $PR\,$ has a length of 22 cm. The angle $\angle QPR\,$ is $58∘58^\circ$ .

Calculate the length of the side $QR$ .
Give your answer to 3 significant figures.

[3]

The Cosine Rule

Question 17

The Cosine Rule Questions

The Cosine Rule

Question 17

The Cosine Rule Questions