Who took oath as the Chief Minister of Haryana for the

Find the maximum value of 18 sin A + 7 cos A.

Find the value of sin²65^o + sin²25^o + cos²35^o + cos²55^o.

If sin3A = cos(5A-30°), then what is the value of A? Given that 3A is an acute angle.

If 2cosθ + 8sin²θ = 11, where 0^o < θ < 90^o, then find the value of cot θ. 

If (sinx + siny) = a and (cosx + cosy) = b, then find the value of (sinx siny + cosx cosy).

[A] (a²+b²-2)/ 2

sin² 17˚ + sin² 19˚ + sin² 21˚ + sin² 23˚ + ……… + sin² 77˚ = ?

If 4cos²x - 3 = 0, and (0° > x > 90°), then find the value of 'x'.