Quantitative Aptitude - Arithmetic Ability Questions

Calculate the angle subtended by the chord at the point on the major arc if the radius and the chord of the circle are equal in length.

What is the value of sin 75°+ sin 15°?

What will be the roots of the quadratic equation x2 - 25x + 156 = 0?

What is the value of 23+5252-23 ?

What is the value of (sin60° + 2/√3) ?

The angle of elevation of the top of a tower from a point A on the ground is 30°. On moving a distance of 20 metres towards the foot of the tower to a point B, the angle of elevation increases to 60°. The height of the tower in meters is

Two points P and Q are at the distance of x and y (where y > x) respectively from the base of a building and on a straight line. If the angles of elevation of the top of the building from points P and Q are complementary, then what is the height of the building?

The slopes of two lines are 1/√3 and √3. What is the angle between these two lines?