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Trigonometric Functions

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Question 171

The equation

sec⁡2x+asec⁡x+b=0 \sec^2 x + a\sec x + b = 0 sec2x+asecx+b=0

has solutions x=120∘x=120^\circx=120∘, 180∘ 180^\circ\,180∘ and 240∘ 240^\circ\,240∘ for 0≤x≤3600 \leq x \leq 3600≤x≤360.

Find the values of a a\,a and bbb.

[5]
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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