If then what is the value of Cot A?

If cosec 39°= x, the value of is-

If sin3θ=cos(20° - θ) then find out  the value of θ.

If cos θ + sin θ =m, sec θ + cosec θ =n, what is m/n?

Find the value of (cosA - sinA)² + (cosA + sinA)²   -

What is the value of θθ.

If 0 ≤ θ ≤ 90⁰ and 4cos²θ - θ + 3 = 0, then the value of θ is : 

If sec -5π/4 = x, then  the value   of x is