Skip to content

Course home

Sign up

Radians

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143
Question 78
a.

When x x\,x is small, show that tan⁡(5x)cos⁡(2x)\tan(5x) \cos(2x)tan(5x)cos(2x) can be approximated by 5x−10x35x - 10x^35x−10x3

[3]
b.

Hence, approximate the value of tan⁡(0.5)cos⁡(0.2)\tan(0.5) \cos(0.2)tan(0.5)cos(0.2)

[2]
c.

Calculate the percentage error in your approximation

[2]
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