Chapter 11.2, Problem 15E

Unit vectors have a magnitude of one but no direction. True False

Sketch the vector v = 3i - 3j and find its magnitude.

8. Consider the vector v = (-7,8) A. What is the angle between = (-7,8) and the positive x-axis? = Part I: Use the formula ₁₂₁|₂|cose to find the cosine of the angle between the two vectors (-7,8) and (1,0). Cos=-0.6585 Part II: Use the cosine of the angle to find the actual angle between the two vectors.