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1.4 Trigonometry

1.4 Trigonometry

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Question 45

Consider $2\sin^2x=7\cos x+5$ .

a.

Show that it can be written as $2\cos^2x+7\cos x+3=0$ .

[2]

b.

Hence solve it for $0∘≤x<360∘0^\circ\leq x<360^\circ$ .

[3]

Markscheme

1.4 Trigonometry Questions

A Level
Maths
1.4 Trigonometry

84 exam-style questions on CCEA A Level Maths 1.4 Trigonometry, covering 1.4.1 Trigonometry, 1.4.2 Trigonometry, 1.4.3 Trigonometry, 1.4.4 Trigonometry, 1.4.5 Trigonometry, 1.4.6 Trigonometry, and 1.4 Trigonometry. Each one has a worked solution and a mark scheme showing where the marks go.

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