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

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

If θθθθ then sinθ is equal to ;

If x = a secθ cos∅, y = b secθ sin∅, z=c tanθ, then the value of

If is a positive acute angle and 5 cosθ + 12 sinθ = 13, then find the value of cosθ?

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

What is the value of the expression?

(tan0° tan1° tan2° tan3° tan4° …… tan89°)

Find the value of sin (1920°)