GCSE Maths Key Facts
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27 Terms
1
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sin 0
0
2
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sin 30
1/2
3
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sin 45
√2/2
4
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sin 60
√3/2
5
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sin 90
1
6
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cos 0
1
7
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cos 30
√3/2
8
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cos 45
√2/2
9
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cos 60
1/2
10
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cos 90
0
11
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tan 0
0
12
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tan 30
√3/3
13
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tan 45
1
14
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tan 60
√3
15
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tan 90
-
16
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Surface area of a cone
πr² + πrl
17
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Surface area of a cylinder
2πr²+2πrh
18
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Surface area of a sphere
4πr²
19
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Volume of a sphere
4/3 πr³
20
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Volume of a cylinder
πr²h
21
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Volume of a pyramid
1/3 x area of base x height
22
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y=-f(x)
Reflection in x axis
change the sign on the y
change the sign on the y
23
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y=f(-x)
Reflection in y axis
Change the sign on x
Change the sign on x
24
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y=f(x)+a
Translation of y coordinate
Add a to y coordinate
Add a to y coordinate
25
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y=(fx +a)
Translation of x coordinate
Take a away from x coordinate
Take a away from x coordinate
26
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y=af(x)
Enlargement scale factor a
Multiply y by a
Multiply y by a
27
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y=f(ax)
Enlargement by scale factor 1/a
Multiply x by 1/a
Multiply x by 1/a