Type
angle between line. use formula tan theta is | m1 - m2 / 1+m1m2 |
formula for centroid.
distance between parallel lines | c1 - c2 / root a^2 + b^2 |
orthocentre - distance from each line is same.
Type 1
Find minimum of a quadratic equation.
first derivative equate it to 0, get value of x substitute in equation get the value.
2nd degree two polynomial, find minimum integral of the expression.
complete the squares you'll get addition of two square and a constant term, the constant term is the minimum value, if its a fractional value keep on adding mnumber in numerator so that it is completely divisible by denpminator.
complete the squares you'll get addition of two square and a constant term, the constant term is the minimum value, if its a fractional value keep on adding mnumber in numerator so that it is completely divisible by denpminator.
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