Quantitative Aptitude - Arithmetic Ability Questions

If sec (4x - 50°) = cosec(50° - x), Then the value of x is

If ( x - 5)2 + (y - 2)2 + (z - 9)2 = 0, then value of (x + y - z) is

If sin8 θ + cos8 θ – 1 = 0, then what is the value of cos2 θ sin2 θ (If θ ≠ 0 or π/2)?

The value of cos220° + cos270°is

A can make a cupboard in 10 days and B can do it in 50 days. Along with C, they did the job in 6.25 days only. Then in how many days C alone can do the job?

If 3a – (3/a) – 3 = 0, then what is the value of a3 – (1/a3) + 2?

The difference between the compound interest (compounding annually) and simple interest on a sum at the rate of 12% per annum for 2 years is Rs 360. What is the sum (in Rs)?

What is the value of √[(1 ­- cosA)/(1 + cosA)]?