When should you use the sine rule and when should you use the cosine rule?

The sine rule can be used when we either know:a) the length of two sides A and B and an angle that is not the corner where A and B meetb) two angles and the length of one side
The cosine rule can be used when we know:a) all three side lengths orb) when we have the length of sides A and B and the angle of the corner where A and B meet

JB

Related Maths GCSE answers

All answers ▸

Work out the value of the following:


Solve the simultaneous equations: 5x + 3y = 9 and 7x - 2y = 25.


Write 16*8^2x as a power of 2 in terms of x.


How do I factorise a quadratic equation?