What is the difference between trigonometry and Pythagoras?

Pythagoras uses three sides of a right-angled triangle. Trigonometry uses an angle and two sides, or two sides to find an angle.

Do I need the sine rule for ordinary trigonometry?

Not for a right-angled triangle. The sine rule is for triangles that are not right-angled.

Can I practise trigonometry without an account?

Start with the free 12-question test. Topic sets and full mocks sit behind access, and they are original questions.

Trigonometry GCSE Maths questions — sine, cosine, tangent

Trigonometry GCSE Maths questionsTrigonometry GCSE Maths questions: choose sine, cosine or tangent, then rearrange for a side or an angle. Marked practice for Foundation and Higher.Start free GCSE Maths test · Pricing