Quick questions on Further trigonometry: t-substitution and trig series - Edexcel A-Level Further Maths

3short 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?

Show answer

Using

t = \tan\frac{\theta}{2}

, write

\cos\theta

in terms of

t

. [1 mark]

What is q2?

Show answer

Give the general solution of

\sin\theta = \frac{1}{2}

. [2 marks]

What is q3?

Show answer

Write

\sin\theta + \sin 2\theta + \sin 3\theta

as the imaginary part of a geometric series. [2 marks]

Have a question we have not covered?

This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.

All Further MathsQ&A pages