Chapter 3, Problem 40P

GO Displacement ${\stackrel{\to }{d}}_1$ is in the yz plane 63.0° from the positive direction of the y axis, has a positive z component, and has a magnitude of 4.50 m. Displacement ${\stackrel{\to }{d}}_2$ is in the xz plane 30.0° from the positive direction of the x axis, has a positive z component, and has magnitude 1.40 m. What are (a) ${\stackrel{\to }{d}}_1$ · ${\stackrel{\to }{d}}_2$, (b) ${\stackrel{\to }{d}}_1$ × ${\stackrel{\to }{d}}_2$, and (c) the angle between ${\stackrel{\to }{d}}_1$ and ${\stackrel{\to }{d}}_2$?