Chapter 6: Additional Topics in Trigonometry

1.	Identify the vector that is orthogonal to . [Hint]
2.	Find the dot product of the given vectors. and [Hint]
3.	A man pulls a concrete block along level ground by exerting a force of 50 pounds on a rope that makes an angle of with the ground. How much work is done pulling the block 70 feet? [Hint]
4.	Find the angle between the two vectors. [Hint]
5.	Find the vector projection of v onto w for the given vectors. [Hint]
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