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1.5 Trigonometry

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Question 52

In triangle $A B C$ , $A B = 9$ cm, $B C = 7$ cm and angle $B A C = 40°$ .

Given that angle $ACB\,$ is obtuse, find the length $A C$ , giving your answer to 3 significant figures.

[5]

Markscheme

1.5 Trigonometry Questions

A Level
Maths
1.5 Trigonometry

97 exam-style questions on WJEC A Level Maths 1.5 Trigonometry, covering 1.5.1 Trigonometry, 1.5.2 Trigonometry, 1.5.3 Trigonometry, 1.5.4 Trigonometry, and 1.5.5 Trigonometry. Each one has a worked solution and a mark scheme showing where the marks go.

1.5 Trigonometry

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1.5 Trigonometry

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Question 52

In triangle $A B C$ , $A B = 9$ cm, $B C = 7$ cm and angle $B A C = 40°$ .

Given that angle $ACB\,$ is obtuse, find the length $A C$ , giving your answer to 3 significant figures.

[5]

Markscheme

1.5 Trigonometry Questions

A Level
Maths
1.5 Trigonometry