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

If cosec θ=1.25 then $$ {4 \ tanθ-5 \ cosθ + 1\over secθ+ 4cotθ-1}=?$$

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

The value of $$ {2(1-sin^{2}θ)}+{2(1-cos^{2}θ)}$$. 

If $$ sin(θ+30^0)= {3\over \sqrt { 12} }  $$ then find cos²θ : 

If tan $$ -{7π\over4}=x $$ then the value of x is : 

What is the simplified value of (1– sin A cos A)(sin A + cos A)?

Simplify $$ \sqrt{(1-sin^{2}θ) ÷(1-cos^{2}θ)}$$.