Quick questions on Trigonometry: radians, identities and solving equations - Edexcel A-Level Maths

2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?

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A sector has radius

6

cm and angle

\tfrac{\pi}{3}

radians. Find its arc length and area. [3 marks]

What is q2?

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Solve

\cos 2x = \tfrac{1}{2}

for

0 \le x \le \pi

. [4 marks]

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