Discovering Trigonometry (Investigation) WORKSHEET
Suitable for Year groups: Year 8, Year 9
GCSE Tier: Foundation/Higher
Targeting grades: 4-5
Prerequisite knowledge: Measuring lengths and angles, arithmetic, using a calculator.
Discovering Trigonometry (Investigation) WORKSHEET DESCRIPTION
This worksheet is designed to provide an opportunity for learners to discover the relationships between the side lengths of right-angle triangles and the trigonometric ratios sin, cos and tan.
The first three sections provide sets of similar triangles for learners to measure the specified lengths and angles and then compare the ratios of the chosen sides with the relevant trig function. The remaining sections are helpful to consolidate which side lengths match to which trig function.

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Frequently Asked Questions
This trigonometry in right angled triangles worksheet is designed for students in Year 8 and Year 9 and aligns with the UK National Curriculum.



