Skip to content

Course home

1.8.2 Small angle approximations (A-level only)

1.8.2 Small angle approximations (A-level only)

EasyMediumHard
12345678910111213141516171819202122
Question 3
a.

When θ \theta\,θ is small, show that 3cos⁡θsin⁡θ\displaystyle \frac{3\cos \theta}{\sin \theta}sinθ3cosθ​ can be approximated by 6−3θ22θ\displaystyle \frac{6 - 3\theta^2}{2\theta}2θ6−3θ2​

[3]
b.

Hence, approximate the value of 3cos⁡0.2sin⁡0.2\displaystyle \frac{3\cos 0.2}{\sin 0.2}sin0.23cos0.2​

[2]
c.

Calculate the percentage error in your approximation

[2]
Markscheme

1.8.2 Small angle approximations (A-level only) Questions

  1. A Level
  2. /Maths
  3. /1.8.2 Small angle approximations (A-level only)

25 exam-style questions on AQA A Level Maths 1.8.2 Small angle approximations (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

Question bank