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Trigonometric Functions

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Question 102
a.

Show that 5cos⁡x+cot⁡x=05 \cos x + \cot x = 05cosx+cotx=0 can be written as

cos⁡x(5sin⁡x+1)=0 \cos x(5 \sin x + 1) = 0 cosx(5sinx+1)=0
[2]
b.

Hence solve, for −π≤x≤π-\pi \leq x \leq \pi−π≤x≤π, the equation,

5cos⁡x+cot⁡x=0 5 \cos x + \cot x = 0 5cosx+cotx=0

Give your answers to 2 decimal places where appropriate.

[4]
Markscheme

Trigonometric Functions Questions

  1. A Level
  2. /Maths
  3. /Trigonometric Functions

274 exam-style questions on Edexcel A Level Maths Trigonometric Functions, covering 6.1 Secant, Cosecant and Cotangent, 6.2 Graphs of Sec x, Cosec x and Cot x, 6.3 Using Sec x, Cosec x and Cot x, 6.4 Trigonometric Identities, and 6.5 Inverse Trigonometric Functions. Each one has a worked solution and a mark scheme showing where the marks go.

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