A force of magnitude , acting along the line joining the points A (2, -1, 1) and B (3, 1, 2), displaces a particle from A to B. The work done by the force is

## If sec and cosec are the roots of the equation x2 – px + q = 0, then….

If sec and cosec are the roots of the equation x2 – px + q = 0, then

## A class has 175 students. The following data shows the number of students opting one or more subject….

A class has 175 students. The following data shows the number of students opting one or more subjects. Mathematics 100; Physics 70; Chemistry 40; Mathematics and Physics 30; Mathematics and Chemistry 28; Physics and Chemistry 23; Mathematics, Physics and Chemistry 18. How many students have opted Mathematics alone?

## If 3p2 = 5p + 2 and 3q2 + 2, where pq, then the equation whose roots are 3p – 2q and 3q -2p is….

If 3p2 = 5p + 2 and 3q2 + 2, where pq, then the equation whose roots are 3p – 2q and 3q -2p is

## If , then is equal to ….

If , then is equal to

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## If in a triangle ABC, a = 15, b = 36, c = 39, then sin C/2 is equal to….

If in a triangle ABC, a = 15, b = 36, c = 39, then sin C/2 is equal to

## If f(x) = x2 + 4x – 5 and A =, then f(A) is equal to….

If f(x) = x2 + 4x – 5 and A =, then f(A) is equal to

## The solution of the differential equation tan y. sec2x dx + tan x. sec2 y dy = 0 is….

The solution of the differential equation tan y. sec2x dx + tan x. sec2 y dy = 0 is

## If, then z14 is equal to….

If, then z14 is equal to

## If 1 + cos x = k, where x is acute, then is equal to….

If 1 + cos x = k, where x is acute, then is equal to

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