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Beyond Right Angles
Beyond Right Angles
SOH CAH TOA only works for right-angled triangles. But what about the rest? Enter the sine rule! It connects ANY side with its OPPOSITE angle, letting you solve triangles that don't have a right angle.
Now try it yourself
Quiz · Question 1 of 12
Which of the following is the sine rule?
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This topic in real past papers
Every real exam question we've found on sine rule, with a full worked answer.
AQA Paper 3
Two of the four sittings we have full papers for require the sine rule or cosine rule to be used to find a missing angle in a triangle that is not right-angled.
Edexcel Paper 2
All three sittings we have full papers for test trigonometry to find a missing length or angle, and June 2019 tests it twice: once in a simple right-angled triangle and once inside a 3D solid.