Solving trigonometric equations

Sample Solving trigonometric equations questions

A few of the 7 questions, from easier to harder. Choose your exam board and tier to practise them, with every answer marked.

1. Question 13 marksGrade 8
   Solve $2\cos x + 1 = 0$ for $-180^\circ \leq x \leq 180^\circ$

What are the common mistakes in Solving trigonometric equations?

When a pupil makes one of these on Revision Workshop, the marking engine names the mistake and explains it, instead of just marking the answer wrong.

• Uses the period associated with sine/cosine (or another wrong interval) instead of the correct period of pi when finding further solutions of a tan equation.

  Tan has period $\pi$ (not $2\pi$ like sin/cos), so its solutions repeat every $\pi$ radians - the second solution is $\dfrac{\pi}{4} + \pi = \dfrac{5\pi}{4}$

Quick answers about Solving trigonometric equations

How many Solving trigonometric equations practice questions are there?

There are 7 self-marking Additional Maths Maths questions on Solving trigonometric equations, written for Cambridge IGCSE Additional Maths (0606) across Single tier. Each one is marked instantly and has a full worked solution.

Do I need an account to practise Solving trigonometric equations?

No. You can start practising Solving trigonometric equations straight away without an account. A free account keeps your results across sessions, so you can see your progress on this topic over time.