Quantitative Aptitude - Arithmetic Ability Questions

What is the value of cos (90 – B) sin (C – A) + sin (90 + A) cos (B + C) – sin (90 – C) cos (A + B)?

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 28090, and Rs 29775.4 respectively, what is the rate of interest?

What will be the roots of the quadratic equation x2 - 25x + 156 = 0?

If cos 27° = x, the value of tan 63° is

If -3/2 + (2/3)(3x + 9) = x/2, then what is the value of x?

If (1 - sinA)/(1 + sinA) = x, then x is

Select the odd letters from the given alternatives.

Jaikishen can do a piece of work in 15 hours. If he is joined by Jhanvi who is 50% more efficient, in what time will they together finish the work?