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Q18: Answers – Paper 6 – November 2018
Q18: Answers – Paper 6 – November 2018
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Working
a) Sketch the graph of y = cos x + 1 for 0° ≤ x ≤ 720°.
a) Sketch the graph of y = cos x + 1 for 0° ≤ x ≤ 720°.
There is no working for part b!
Question
18 a) Sketch the graph of y = cos x + 1 for 0° ≤ x ≤ 720°.
[3 marks]
b) Explain why the equation cos x + 1 = 2.7 has no solutions.
[1 mark]