Use exact values when evaluating sine and cosine. Can u explain in simple terms that way its easier for me to understand Part A: Find −7u ⋅ v. Show your work.  Part B: Use the dot product to determine if u and w are parallel, orthogonal, or neither. Justify

Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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Vectors u = −4(cos 60°i + sin60°j), v = 8(cos 135°i + sin135°j), and w = 12(cos 150°i + sin150°j) are given. Use exact values when evaluating sine and cosine.

Can u explain in simple terms that way its easier for me to understand
Part A: Find −7u  v. Show your work. 
Part B: Use the dot product to determine if u and w are parallel, orthogonal, or neither. Justify your answer.

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