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

The numerical value of $$ {1\over 1+cot2}+{3\over 1+tan^2θ}+2sin^2θ$$ will be 

What is the value of $${cos^2A\over {1+sinA}}$$?

The value of sin 73⁰ + cos 137⁰ is:

The value of $$ {tan\ 40°+tan\ 20° +\sqrt{3}\ tan20° tan40°}$$?

$${1+sinθ}\over cosθ $$ is equal to which of the following (where $$θ ≠ {π\over2} $$

Find the value of sin (1920°)

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