Which state of India has the highest area under

If sec a + tan a = 5/2, find the value of sin a. 

If A lies in the first quadrant and 6 tan A = 5, then the value of 8 sin A−4 cos A / cos A+2 sin A is :

If 2ycosθ = x sinθ and 2xsecθ – ycosecθ = 3, then x ² + 4y ² = ?

If sec A + tan A = 3 then the value of cot A is:

If cos⁴ B - sin⁴ B =

If sin (2x + 50) ^o = cos (2y - 50) ^o, such that, 0^o < x + y < 90^o, then find the value of tan(x + y) .

If tan 4θ = cot 14θ, then find the value of cos 9θ.

If (sinθ+cosθ)/(sinθ-cosθ) = 2, then the value of sin⁴ θ is