equations not on FORMULA SHEET Flashcards
1
Q
pythagoras
A
c^2=b^2+a^2
2
Q
Trig
A
SohCahToa
3
Q
gradient
A
y2-y1/x2-x1
4
Q
equation of a straight line
A
y=mx+c or y-b=m(x-a)
5
Q
magnitude of a vector
A
square root of component 1, component 2 or component 3
6
Q
compound interest
A
GF to the power of how many times x money
7
Q
reverse of percentage
A
90/100 divide by 90 and times by 100
8
Q
3D pythagoras (cubiod)
A
d^2=b^2+c^2+a^2
9
Q
speed distance time
A
d=st
t=d/s
s=d/t
10
Q
volume of cubiod
A
l^3
11
Q
volume of a prism
A
(base/area of shape) x length
12
Q
area of a circle
A
a=pir^2
13
Q
area of sector
A
sector=angle/360 xPI x r^2
14
Q
arc length
A
arc length= angle/350 x PI x d
15
Q
finding angle at center
A
angle=arc/pi x D
angle=sector/pi * r*r
