If `m_(1)` ,`m_(2)` are the slopes of two lines and `theta` is the angle between two lines then `tan theta =`

The slopes of two lines are (1)/(2) and 3 . Find the angle between them.

If l_(1),m_(1),n_(1) and l_(2),m_(2),n_(2) are the directional cosines of two vectors and theta is the angle between them, then their value of cos theta is

If m is the slope of a line and m+2=m+3. then the possible angle between line and x- axis is

If theta is the acute angle between the lines 6x^(2)+11xy+3y^(2)=0 ,then tan theta

If (theta) is an acute angle between the lines y=2x+3,y=x+1 then the value of tan theta=