Quantitative Aptitude - Arithmetic Ability Questions

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

Daily local train ticket costs Rs 60 and Monthly Pass costs Rs 1566. If I buy the Monthly Pass and travel for 29 days in a month than I save?

A fan is sold at a discount of 37.5%. If the marked price of the fan is Rs 7200, then what is the selling price (in Rs) of the fan?

If x - y = -9 and xy = -20, then find x2 + y2 ?

What is the value of tan3A?

If cot(A/2) = x, then x is equal to

What is the value of Tan 45° + 4/√3 Sec 60°?

The first and last terms of an arithmetic progression are 37 and ­18. If the sum of the series is 114, then it has how many terms?