The Cosine Rule

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Question 15

A triangular metal brace has vertices $L$ , $M$ , and $N$ . The side $LN\,$ has a length of 12.5 cm, the side $NM\,$ has a length of 9.2 cm, and the side $LM\,$ has a length of 14.8 cm.

Work out the size of angle $L N M$ .
Give your answer to 3 significant figures.

[3]

The Cosine Rule

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Question 15

A triangular metal brace has vertices $L$ , $M$ , and $N$ . The side $LN\,$ has a length of 12.5 cm, the side $NM\,$ has a length of 9.2 cm, and the side $LM\,$ has a length of 14.8 cm.

Work out the size of angle $L N M$ .
Give your answer to 3 significant figures.

[3]

The Cosine Rule

Question 15

The Cosine Rule Questions

The Cosine Rule

Question 15

The Cosine Rule Questions