Skip to content
MathsGenie logo
Quick links
Open app

Course home

  1. A Level
  3. Maths OCR
  5. Question bank

1.5 Trigonometry

EasyMediumHard
1234567
Question 3

Prove the identity:

1−2sin⁡2xcos⁡x−sin⁡x≡cos⁡x+sin⁡x \frac{1 - 2\sin^2 x}{\cos x - \sin x} \equiv \cos x + \sin x cosx−sinx1−2sin2x​≡cosx+sinx
[2]

1.5 Trigonometry Questions

  1. A Level
  2. /Maths
  3. /1.5 Trigonometry