Quantitative Aptitude - Arithmetic Ability Questions

2sin[(C+D)/2].sin[(D­-C)/2] is equal to

Find the 4th proportional to 9, 17 and 27.

If sinθ x cosθ = 1⁄2 . The value of sinθ ­- cosθ is where 0°< θ< 90°

If cosec 45° - sin 30° = x, then x is

A man travelled at 40 kmph. Had he increased his speed by 16 kmph, he would have covered 80 km more in the same time. Find the actual distance travelled?

The ratio between Ram's age and Rahim's age is 10:11. What is the age of Rahim in percentage of Ram's age

What will be the value of xy, if x2+y2 = 45 and x-y=5 ?

The ratio of the cost price and selling price of an article is 5 : 3. What is the loss percentage?