Quantitative Aptitude - Arithmetic Ability Questions

cosA/(1 -­ sin A) is equal to

What is the value of cos 4π/3?

199994 x 200006 = ?

Find the length of one side of a rhombus whose area is 24 sq.cm and the sum of the lengths of its diagonals is 14 cm.

∆XYZ is right angled at Y. If tanX = 15/8, then what is the value of sinZ ?

What is the least number that should be added to the product 11 x 12 x 13 x 14 to make it a perfect square?

If x4+1x4=119,then the value of x-1x is

A cone of radius 7 cm and height 12 cm is completely filled with water. This water is emptied into an empty cylindrical vessel of radius 3.5 cm. What will be the height of water in this vessel?