Find the value of (cos0° + sin45° + sin30°) (sin90° - cos45° + cos60°).

cos 36 - sin 54 equal to

If 4 sin ² θ - 1 = 0 and θ is less than 90^o, then the value of θ is

If sinφ = 1/2, then 3cosφ - 4cos³φ = ?

In the figure given below,  ΔABC is right angled at B. Given that AB = y units, BC = √3 units, AC = 2 units and∠ A = x^o,  find sin x^o.

Find the value of  .

9 tan²θ - 9 Sec²θ =

If sec 5A = cosec (A - 20), where 5A is an acute angle, then the value of A is

If x cosθ - y sinθ = a, x sinθ + ycosθ = b, then  x² + y² =

Find tan 24⁰ + cos 42⁰.