General Maths formulas for class 12th HSC Board
List – class 12th General Maths of formulas:
The Quadratic formula x = [-b ± √(b2 – 4ac)] / 2a
Expansions (a = b)2 = a2 + 2ab + b2
Equation of a Circle (x – a)2 + (Y – b2) = r2
Equation of a semi Circel y = b ± √(r2 – (x – a)2)
Sums and Differences
of Cubcs x3 + y3 = (x + y)(x2 – xy + y2)
x3 – y3 = (x-y)(x2 + xy + y2)
Axis of symetry x = -b/2a
Trigonometric Ratios sin α = O/H
cos α = A/H
tanα = O/A
Reciprocal Ratios cosec α = 1/ sin α = O/H
sec α = 1/ cos α = H/A
cot α = 1/ tanα = O/A