10. (18 pts] Let ii = (4.2} and E? = {1. 3). (Work required only for parts d and e, on the next page.) (a) Find 7 i} 3E and state the result in component form. (b) State the exact magnitude (length) of ii and the exact magnitude of 175. (c) State the dot product i} - E. (d) Find proj;[ ii) in component form. Give exact values. Show work. (e) Determine the angle between ii and RF. Show work. Write the exact angle as the arccosine of an appropriate number. Also, use a calculator to approximate the value of the angle, rounding the result to the nearest degree