The angle between the two lines whose, direction ratios are `(12,8,9)`&`(3,-4,0)` is:

STATEMENT-1 : The angle between the lines whose direction ratios are (1, 2, 3) and (-12, 3, 2) is 90^(@) STAEMENT-2 : The direction cosines of a line whose direction ratios are (3, 4, 12) are (3/13, 4/13, 12/13) . STATEMENT-3 : If cosalpha, cosbeta,cosgamma are the direction cosines of a line then sin^(2)alpha + sin^(2)beta +sin^(2)gamma = 2.

If the angle between the lines whose direction ratios are (2,-1,2) and (x,3,5) is pi/4 , then the smaller value of x is

The angle between the lines whose direction ratios are 1,1,2,sqrt3-1,-sqrt3-1,4 is

The acute angle between the two lines with direction ratios (1,-2,-2) and (2,-2,1) is

Find the angle between the lines whose direction ratios are: 2,-3,4 and 1,2,1 .

The acute angle between the lines whose direction ratios are 1, 2, 2 and -3, 6, -2 is

Find the angles between the lines whose direction ratios are 3,2,-6 and 1,2,2.

The measure of acute angle between the lines whose direction ratios are 3, 2, 6 and -2, -1, 2 is