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

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

$${sin^2θ\over cosθ(1+cosθ)}+{1+cosθ\over cosθ} =?$$

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

What is the value of the expression?

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

(sinθ+cosecθ)²+(cos θ+ sec θ)²=?

If x = a secθ cos∅, y = b secθ sin∅, z=c tanθ, then the value of $$ {x^2\over a^2}+{y^2\over b^2}-{z^2\over c^2} $$

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