The diagram shows rays of light from a point source, p, that reach a detector, d, along two paths. one path is a straight line, while the other is bent by reflection off a mirror. what is the value of b, correct to one decimal place? assume that all the points in the diagram lie in the same plane.

5.4

4.2

3.6

2.8

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.