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 ...

Understanding how to convert between degrees and radians is one of the most crucial skills for anyone studying trigonometry, ...

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.

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.