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Year 12 Maths Standard 2 (2027) Trigonometry

The Cosine Rule

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Questions
Question 1
189427

In the triangle shown, \(AB=8\text{ cm}\), \(AC=5\text{ cm}\) and the included angle \(A=62^\circ\). Find the length of \(BC\), correct to two decimal places.

Triangle ABCSAS 8,5,62 A B C 8 cm 5 cm 62°
7.17
 \(\text{ cm}\) (2 d.p) 1 mark

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