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DIY Maths: Find an unknown side length


In this module, you can study how to use trig ratios (sine, cosine and tangent) to find an unknown side length in a right triangle.


Did you know?

A right triangle can have its right angle at the top.

Study and practice

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Use these search terms to find your own resources:

solving right triangles with trigonometry
solving right triangles with sines, cosines and tangents

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