Quantitative Aptitude - Arithmetic Ability Questions

If sinC + sinD =X, then the value of X is?

If the perimeter of a semicircle is 36 cm, then find its area (in cm2).

Which of the following quadratic equations has real roots?

If the angles of a triangle are in the ratio of 1 : 4 : 7, then find the ratio of the greatest angle to the smallest angle.

 In the triangle ABC, the internal bisector of angle A meets the side BC at D. If BD=7.5 cm and BC=9 cm. Then calculate the value of AB:AC.

If x = 2 +√3, y = 2 – √3 and z = 1, then what is the value of (x/yz) + (y/xz) + (z/xy) + 2 [(1/x) + (1/y) + (1/z)]?

If cot 60° + cosec 60° = x, then the value of x is

If 8x/3 + [7(5 - 2x/3)]/2 = 1/2 , then what is the value of x?