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A Level Maths Formulas + Identities not given

All the Edexcel A Level Maths Formulas + Identities not given to you in the formula booklet. For answers division symbols will be /, multiplication will be displayed as a capital X + or - will be displayed as +/-, powers will be written as x*x, pi will be displayed as pi, theta will be displayed as theta and square roots will be displayed a x*1/2. for example the quadratic formula will be displayed as: x= -b+/- (b*2-4ac)*1/2/2a.
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gcpas
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Last updated: April 21, 2026
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First submittedApril 21, 2026
Times taken1
Average score31.4%
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Hint
Answer
Quadratic Equation(x=)
-b+/-(b*2-4ac)*1/2/2a
Cosine Rule (a*2=)
b*2+c*2-2bc cosA
Cosine Rule (cosA=)
b*2+c*2-a*2/2bc
Sine Rule
a/sinA=b/sinB=c/sinC
Area of a triangle (A=)
1/2absinC
Gradient (m=)
y2-y1/x2-x1
Perpendicular line
m1Xm2=-1
Equation of circle (centre (a,b) and radius (r)
(x-a)*2+(y-b)*2=r*2
Indices multiplication law (a*mXa*n)=
a*m+n
Indices division law (a*m/a*n)=
a*m-n
Indices brackets law 1 ((a*m)*n)=
a*mn
Indices brackets law 2 ((ab)*n)=
a*nb*n
Indices power law 1 (m root of a)=
(a*1/m)
Indices power law 2 (a*-m)=
1/a*m
Log Laws 1 (loga(x) + loga(y)=)
loga(xy)
Log Laws 2 (loga(x) - loga(y)=)
loga(x/y)
Log Laws 3 loga(x*y)=
yloga(x)
Log Laws 4 loga(a)=
1
Hint
Answer
Log Laws 5 loga(1)=
0
Log Laws 6 loga(1/x)=
-loga(x)
Arithmetic series (Un=)
a+(n-1)d
Geometric series (Un=)
ar*n-1
1/sinx=
cosecx
1/cosx
secx
1/tanx or cosx/sinx=
cotx
sinx/cosx=
tanx
sin*2x+cos*2x=
1
1+cot*2x=
cosec*2x
tan*2x+1=
sec*2x
sin2x=
2sinxcosx
cos2x=
cos*2x-sin*2x | 2cos*x-1 | 1-2sin*2x
tan2x=
2tanx/1-tan*2x
radian=
180/pi
arc length(l)=
rXtheta
Sector area (A=)
1/2r*2 theta
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