5.5 Small Angle Approximations
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Given that θ\thetaθ is a small angle, find an approximation for cos⁡(3θ)\cos(3\theta)cos(3θ).

Select the correct answer from the options below:

1−9θ221 - \frac{9\theta^2}{2}1−29θ2​

1−3θ221 - \frac{3\theta^2}{2}1−23θ2​

3−3θ223 - \frac{3\theta^2}{2}3−23θ2​

1−9θ21 - 9\theta^21−9θ2

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5.5 Small Angle Approximations Questions

Practise Edexcel A Level Maths 5.5 Small Angle Approximations with exam-style questions for A Level Maths. 25 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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5.5 Small Angle Approximations Questions

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