If the roots of are and for some then which one of the following is correct?
b2 – a2 = 2ac
Given:
are roots for some of the above equation
Step-1 Find the sum and product of roots of
are roots for some of the above equation.
Sum of the roots = - coefficient of / coefficient of
…(1)
Product of roots = Constant / coefficient of
…(2)
Step-2 Solve equations (1) and (2)
Squaring both sides of equation (1)
Use the trigonometric Identity and equation (2).
Subtracting both sides by 1.
Therefore option (C) is the correct option.