List of top Mathematics Questions on angle between two lines asked in KCET

The angle between the line $x + y = 3$ and the line joining the points $(1, 1)$ and $(-3, 4)$ is:

The sine of the angle between the straight line $\frac{x - 2}{3} = \frac{y - 3}{4} = \frac{4-z}{5}$ and the plane $2x - 2y + z = 5$ is:

The angle between the lines $2x = 3y = - z$ and $6x = - y = - 4z$ is