Maths equations for GCSE Edexcel

To be updated soon

Quadratic formula

Pythagoras theorem

a²+b²=c²

Sine rule

Cosine rule for finding angles

Cosine rule

a²=b²+c² -2bc cos A

Area of a trapezium

1/2(a+b)h

Area of a parallelogram

bxh

Area of a triangle

1/2xbxh

Trigonometric identities PT1

Trigonometric identities PT2

Trigonometric ratios

SOH CAH TOA

Volume of a prism

V= area of cross section x h

Volume of a cylinder

V= πr²h

Area of a circle

A = πr²

Volume of a pyramid

1/3 area of base x h

Circumference of a circle

πd

Length of an arc

θ/ 360 x r x π x 2

Area of a sector

θ/360=πr²

Area of a segment

A = area of sector - area of triangle

Gradient of a line

Difference in y/difference in x

Alternate angles

Both angles are the same in each example.

Corresponding angles

Both angles are same size.

Co-interior angles

Add up to 180°

Opposite angles

Angles that are opposite are the same.