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Trigonometry and Modelling

Trigonometry and Modelling

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Question 45
a.

Express 5cos⁡2x−3sin⁡2x5 \cos 2x - 3 \sin 2x5cos2x−3sin2x in the form Rcos⁡(2x+a)R \cos(2x + a)Rcos(2x+a)

[3]
b.

Give full details of a sequence of three transformations needed to transform the curve y=cos⁡xy = \cos xy=cosx onto the curve y=5cos⁡2x−3sin⁡2xy = 5 \cos 2x - 3 \sin 2xy=5cos2x−3sin2x

[4]
Markscheme

Trigonometry and Modelling Questions

  1. A Level
  2. /Maths
  3. /Trigonometry and Modelling

137 exam-style questions on Edexcel A Level Maths Trigonometry and Modelling, covering 7.1 Addition Formulae, 7.2 Double Angle Formulae, 7.3 Solving Trigonometric Equations, 7.4 Simplifying a cos x +- b sin x, 7.5 Proving Trigonometric Identities, and 7.6 Modelling with Trigonometric Functions. Each one has a worked solution and a mark scheme showing where the marks go.

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