If a cot θ + b cosec θ= p and b cot θ + a cosec θ = q then p² -q² is equal to _____

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

If sin A=, then what is the value of sec A?

Select the INCORRECT formula from the following options.

The numerical value of θθ will be 

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

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

Find the value of sin (1920°)