In the adjacent figure m || n. A, B are any two points on m and n respectively. Let ‘C’ be an interior, point between the lines m and n. Find `angleACB`.

Let A and B be two finite sets having m and n elements respectively. If mlen , the total number of injective functions from A to B is :

Let A and B be two sets consisting of m and n elements respectively (n ge m) . The number of one-one functions from A to B is

A and B are two matrices of the order 3xx m and 3xx n respectively, and m=n, then the order of the matrix (5 A-2 B) is

In the adjacent figure, a line n falls on lines 1 and m such that the sum of the interior angles 1 and 2 is less than 180°, then what can you say about lines 1 and m.

The direction cosines l, m, n of two lines are connected by the relation l+m+n=0 and l . m=0 then the angle between them is

There are 2n points in a plane in which m are collinear. Number of quadrilaterals formed by joining these lines:

If the direction ratios of two lines are given by 3lm-4ln+mn=0 and l+2m+3n=0 then the angle between the lines is

Let ngeq2 be integer. Take n distinct points on a circle and join each pair of points by a line segment. Color the line segment joining every pair of adjacent points by blue and the rest by red. If the number of red and blue line segments are equal, then the value of n is

Let AP and BQ be two vertical poles at points A and B, respectively. If AP = 16 m, BQ = 22 m and AB = 20 m, then find the distance of a point R on AB from the point A such that RP^(2) + RQ^(2) is minimum.