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y = ax2 + bx + c

quadratic function equation

a type of function

a/sinA = b/sinB = c/sinC

sine rule for a missing side

a rule to find a side or angle

sinA/a = sinB/b = sinC/c

sine rule for a missing angle

rule for a missing side or angle

a2 = b2 + c2 - 2bcCosA

cosine rule for a missing side

rule for a missing side or angle

C = (Cos-1 x a2 + b2 - c2)/2ab

cosine rule for a missing angle

rule for a missing side or angle

a + b = c


a x b = d

factorisation by grouping

a type of factorisation

x = -b +- (square root) b2- 4ac / 2a

quadratic formula for x

formula for x