Maths Formulas n Stuff

Question 1

z rule

Answer 1

alternate angles

Question 2

f rule

Answer 2

corresponding

Question 3

u rule

Answer 3

cointerior

Question 4

2 angles add to 90*

Answer 4

complementary

Question 5

2 angles add to 180*

Answer 5

supplementary

Question 6

polygon angle sum

Answer 6

s = 180 ( n - 2 )

Question 7

regular polygon 1 angle

Answer 7

180 ( n - 2 )
_______
n

Question 8

angles in a triangle

Answer 8

c = a + b

Question 9

when to flip sign in inequalities

Answer 9

when multiplying or dividing by a negative

Question 10

formula for a gradient

Answer 10

y2-y1
____
x2-y1

Question 11

SA of a cylinder

Answer 11

2 π r ( r + h )

Question 12

SA of a cone

Answer 12

π r ( r + s )

Question 13

SA of a sphere

Answer 13

4 π r ²

Question 14

SA of a prism

Answer 14

2 * Area fo Base + (Perimeter of base * h )

Question 15

opposite of sinθ

Answer 15

cscθ

Question 16

opposite of cosθ

Answer 16

secθ

Question 17

opposite of tanθ

Answer 17

cotθ

Question 18

how to find x
………………. ____
…………………….H

Answer 18

H * sinθ = x

Question 19

how to find O
____
x

Answer 19

O
____ = x
sinθ

Question 20

how to find sinθ

Answer 20

( O )
sin (__) = θ
( H )

Question 21

midpoint formula

Answer 21

( x1 + x2 y1 + y2 )
M = ( _____ , _____ )
( 2 2 )

Question 22

distance between 2 points

Answer 22

d = √ ( ( x2 - x1 ) ² + ( y2 - y1 ) ² )

Question 23

scale factor

Answer 23

image length
___________
original length

Question 24

linear scale factor

Answer 24

length x SF

Question 25

area scale factor

Answer 25

area x SF ²

Question 26

volume scale factor

Answer 26

volume x SF ³

Question 27

prism volume

Answer 27

Area of base x h

Question 28

pointy shapes volume

Answer 28

Area of base x h _____________ 3

Question 29

sphere volume

Answer 29

4 _ * π * r ³ 3