Click the box with the correct quadratic formula.
Hint: the question form is ax^2 + bx + c = 0 where a isn't equal to 0.
^2 this means squared and this √ is square root.
- b +- √b^2 - 4ac
x = _______________
2 a
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area of a triangle where the length of sides are unknown
the sin cos tan are the same as used in trigonometry sohcahtoa
1/2 ab sinC
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sine rule
a b c
____ = _____ = ______
sin A sin B sin C
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cosine rule
^2 this means squared number :)
a^2 = b^2 + c^2 - 2bc cosA
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probability formula - working out the outcome of each A and B with P being their probability.
its okay if you don't know the exact formula for this as usually you can just work it out using skills from probability itself.
a and b are just values for wh
P(A and B) = P(A when given B) x P(B)
5 of 19
compound interest formula
where p is principal amount, r is interest rate and n is how times (years) the interest was applied.
^n the whole formula is to the power of n.
r
amount = P ( 1 + ____ )^n
100
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area of triangle where you know the side lengths
1/2 b x h
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area of a parellelogram
b x h
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VOLUME of cuboid
length x width x heigth
9 of 19
VOLUME of prism
length x area of cross section
10 of 19
Pythagoras theorem with hypotenuse as c
a^2 + b^2 = c^2
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sin angle pythagoras
sin θ = o/h
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tan angle pythagoras
tan θ = o/a
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cos angle pythagoras
cos θ = a/h
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speed, distance, time formula (same one in physics)
speed = distance/time
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density, mass, volume formula (same in physics)
density = mass/volume
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area of a circle. r being radius d being diameter h being height
π r^2
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circumference of a circle
2π r
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area of a trapezium.
a and b being the sides and h being the height and ^2 meaning squared
1/2 (a + b) h
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Other cards in this set
Card 2
Front
area of a triangle where the length of sides are unknown
the sin cos tan are the same as used in trigonometry sohcahtoa
Back
1/2 ab sinC
Card 3
Front
sine rule
Back
Card 4
Front
cosine rule
^2 this means squared number :)
Back
Card 5
Front
probability formula - working out the outcome of each A and B with P being their probability.
its okay if you don't know the exact formula for this as usually you can just work it out using skills from probability itself.
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