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# GCSE (9-1)Edexcel Maths watch

1. could somebody please write a list of all the formula that we will need to know for the new gcse 9-1 maths specification for edexcel as i know we will not be given as many formula
2. Formula//
Area of a triangle= bxh divided by 2 & 1 half ab sin c
Cosine Rule, a2=b2+c2-2bccosA
Sine Rule, sin A over a equals sin B over b which is equal to sin C over c
Pythagoras, a2=b2+c2
Trig, SOH CAH TOA

Circumference of a circle, pi x diameter
Area of a circle, 2 x pi x r2

volume of a cuboid = l x w x h
v of prism = area of cross section x length
v of cylinder = pi r2 x h
v of a pyramid = 1/3 x area of base x h

parallelogram area= bxh
rectangle area= lxw
area of a trapezium= 1/2 a+b x h

quadratic formula = (-b plusminus the square root of b2-4ac) divided by 2xa
3. In addition to the above formulae:

Median of a data set: (n+1)/2 where n is the variable pertaining to (total) frequency
Pressure = Force / Area
Speed = Distance / Time
Exterior angle = n/360
Sum of interior angles: (n-2) x 180
Area of a Sector: (some given angle)/360 x Pi x radius squared
Length of an arc: (some given angle)/360 x Pi x diameter
Perimeter of a sector: (some given angle)/360 x Pi x diameter + 2r
Volume of a sphere: 4/3 x Pi x radius cubed
Surface area of a sphere: 4 x Pi x radius squared
4. (Original post by candidatezero)
in addition to the above formulae:

Median of a data set: (n+1)/2 where n is the variable pertaining to (total) frequency
pressure = force / area
speed = distance / time
exterior angle = n/360
sum of interior angles: (n-2) x 180
area of a sector: (some given angle)/360 x pi x radius squared
length of an arc: (some given angle)/360 x pi x diameter
perimeter of a sector: (some given angle)/360 x pi x diameter + 2r
volume of a sphere: 4/3 x pi x radius cubed
surface area of a sphere: 4 x pi x radius squared
thank you so much

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Updated: May 19, 2017
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