Skip to content

Course home

Sign up

Radians

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120
Question 117

Given that θ\thetaθ is a small angle, find an approximation for cos⁡(3θ)\cos(3\theta)cos(3θ).

Select the correct answer from the options below:

1−9θ221 - \frac{9\theta^2}{2}1−29θ2​

1−3θ221 - \frac{3\theta^2}{2}1−23θ2​

3−3θ223 - \frac{3\theta^2}{2}3−23θ2​

1−9θ21 - 9\theta^21−9θ2

[3]
Markscheme

Radians Questions

  1. A Level
  2. /Maths
  3. /Radians

278 exam-style questions on Edexcel A Level Maths Radians, covering 5.1 Radian Measure, 5.2 Arc Length, 5.3 Areas of Sectors and Segments, 5.4 Solving Trigonometric Equations, and 5.5 Small Angle Approximations. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank