# Maths equations for GCSE Edexcel

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### 24 Terms

1

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2

Pythagoras theorem

a²+b²=c²

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3

Sine rule

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4

Cosine rule for finding angles

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5

Cosine rule

a²=b²+c² -2bc cos A

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6

Area of a trapezium

1/2(a+b)h

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7

Area of a parallelogram

bxh

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8

Area of a triangle

1/2xbxh

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9

Trigonometric identities PT1

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10

Trigonometric identities PT2

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11

Trigonometric ratios

SOH CAH TOA

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12

Volume of a prism

V= area of cross section x h

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13

Volume of a cylinder

V= πr²h

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14

Area of a circle

A = πr²

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15

Volume of a pyramid

1/3 area of base x h

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16

Circumference of a circle

πd

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17

Length of an arc

θ/ 360 x r x π x 2

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18

Area of a sector

θ/360=πr²

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19

Area of a segment

A = area of sector - area of triangle

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20

Difference in y/difference in x

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21

Alternate angles

Both angles are the same in each example.

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22

Corresponding angles

Both angles are same size.

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23

Co-interior angles

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24

Opposite angles

Angles that are opposite are the same.

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