If Tan⁴x – Tan²x=1 then the value of Sin⁴x + Sin²x is__

If a(tanθ+cotθ)=1, sinθ+cosθ=b and 0°<θ<90°, then the relation between a and b.

Find the value of $$\left({1\over {sin 60°}} \right)^{2} + (cos 30°)^{2} \over(tan 45°)^{2}$$.

If 0 ≤ θ ≤ 90⁰ and 4cos²θ - $$4{\sqrt { 3} \ }cosθ$$ + 3 = 0, then the value of θ is : 

$$ {tan7°tan23°tan60°tan67°tan83°}$$ is equal to-

If $$ {secθ+tanθ\over secθ - tanθ} $$= $$ 2{51\over 79} $$ sinθ then the value of sin θ is :

Find the minimum value of $$ {25 cosec^{2}θ +25sin^{2}θ}$$

The value of sec⁴ A (1 – sin⁴A) – 2tan²A is: