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2006 SQA Higher Maths: paper 1 no.7: Double angle equation

2,342 views · Published 3 February 2015 · 8:00 · Indexed 21 September 2026

Channel: DLBmaths · 2015 · Education

Solving a trig equation where terms involve functions of the angle and double the angle.
Note on “etiquette” when the angle is in degrees.

3 techniques are given:

1. Factorizing the equation
2. Graphical solution – only part marks available
3. Simplification of the equation, and considering the two cases.

Instructional exercise consisting of question 7 from paper 1 of the 2006 SQA Higher Mathematics exam.
Set out in stages of 'try then check' the worked solution to each part of the question.
Including indications of where each mark is allocated, and the requirements for that mark, according to the marking scheme.

2006 SQA Higher Maths: paper 1 no.7: Double angle equation

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