if 2sinθ + 2sin²θ = 2, then the value of 2 cos⁴θ + 2cos²θ is:

$$ secA(secA+tanA)(1-sinA)\over (cosec^2A-1)sin^2A$$ is equal to:

if (1+sinα) (1-sinβ) (1+sinγ)= (1-sinα) (1-sinβ) (1-sinγ)=?

(sinθ+cosecθ)²+(cos θ+ sec θ)²=?

If p = cosec θ – cot θ and q = (cosec θ + cot θ)^-1 then which one of the following is correct?

For any real value of $${\sqrt {secθ-1}\over \sqrt {secθ+1} }=?$$

Find the value of sin (1920°)

The elimination of θ from x cosθ-y sinθ=2 and x sinθ + ycosθ = 4 will give