1+4sqrt(-3)

Find the square roots of the following : 1+4 sqrt(-3)

Show that the lines whose d.c's are proportional to (2,1,1), (4,sqrt(3)-1,-sqrt(3)-1) are inclined to one another at angle (pi)/(3) .

A line makes 30^(@) angle with positive direction of y axis in clockwise direction, then slope of line is : ( 1 ) sqrt(3) ( 2 ) - sqrt(3) ( 3 ) 1/(sqrt3) ( 4 ) - 1/(sqrt3)

Find the value of (1)/((sqrt(4)-sqrt(3)))

Find the acute angle between the pair of straight lines whose direction cosines are sqrt(3)/4, -1/4, -sqrt(3)/2 and -sqrt(3)/4, 1/4, -sqrt(3)/2

The angle between the lines whose direction cosines are (sqrt(3)//4, 1//4, sqrt(3)//2) " and " (sqrt(3)//4, 1//4, -sqrt(3)//2) , is

(1)/(4)(sqrt(3)cos23^(@)-sin23^(@)) is equal to