Quantitative Aptitude - Arithmetic Ability Questions

If Sinx = 4/5, then Secx/Sinx = ?

After buying a toy for Rs.45, Raghu managed to sell it at a profit of 15%. The selling price of the toy was

From the top of a platform 5 m high, the angle of elevation of a tower was 30 deg. If the tower was 45 m high, how far away from the tower was the platform positioned?

The base and hypotenuse of a right angled triangle is 12 cm and 5 cm respectively. Find the circum-radius (in cm) of the triangle.

The amount of Rs. 10,000 after 2 years, compounded annually with the rate of interest being 10% per annum during the first year and 12% per annum during the second year, would be (in rupees)

What is the effective discount (in %) on two successive discounts of 20% and 10%?

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