If are the roots of the equation ax2 - bx + c = 0, then a, b and c satisfy the relation
a2 + b2 + 2ac = 0
a2 - b2 + 2ac = 0
a2 + c2 + 2ab = 0
a2 - b2 - 2ac = 0
Prove that the equation cos(2x) + asin(x) = 2a - 7 possesses a solution if .
cos(2x) + asin(x) = 2a - 7
To find the possible values of a we will use the following inequation as we know that value of sin x lies between -1 to 1.
So for this range the solution of the trigonometric equation exists