A unit circle is an important part of trigonometry and can define right angle relationships known as sine, cosine and tangent.

A unit circle is an important part of trigonometry and can define right angle relationships known as sine, cosine and tangent.

Part of that is the way it's taught. Students are taught the "unit circle" and its relationship to trigonometry, but many fail to make the leap on how crucial circles are for trig functions. With ...

The first identity is the foundation of trigonometry, representing the relationship between sine and cosine on the unit circle.

Learn and revise trigonometric ratios of sine, cosine and tangent and calculate angles and lengths in right-angled triangles with GCSE Bitesize AQA Maths.

Trigonometric graphs - Higher This circle has the centre at the origin and a radius of 1 unit. The point P can move around the circumference of the circle.