The equation cos θ = -1.01 has infinitely solutions.
True
False
-1 ⩽ cos θ ⩽ 1 Hence cos θ cannot take a value -1.01
The equation cosθ=−1.01 has infinitely solutions.
Find the value of θ, if the equation cos θ x2−2sin θ x−cos θ=0 has real roots