Q.
A particle starting from the origin (0,0) moves in a straight line in the (x,y) plane. Its coordinates at a later time are (3,3). The path of the particle makes with the x-axis an angle of
Draw the situation as shown. OA represents the path of the particle starting from origin O(0,0). Draw a perpendicular from point A to x-axis. Let path of the particle makes an angle θ with the x-axis, then tanθ= slope of line OA =OBAB=33=3
or θ=60∘