Quantitative Aptitude - Arithmetic Ability Questions

The simplest form of 3565/1495 is

What is the value of sinAtanA/(1 - cosA)?

One of the diagonal of a rhombus is 70% of the other diagonal. What is the ratio of area of rhombus to the square of the length of the larger diagonal?

If α + β = 90° and α:β = 2:1, then the ratio of cosα to cosβ is

Two numbers are 50% and 80% lesser than a third number. By how much percent is the second number to be enhanced to make it equal to the first number?

What is the simplified value of cosec6A – cot6A – 3 cosec2A cot2A?

If (4x - 3) - (2x + 1) = 4, then the value of x is

If p = 99, then the value of p(p2+3p+3) will be