In this lesson, we will learn how to use the dot product to find the angle between two nonzero vectors in a plane.
Q1:
If ||=10A and ||=17B, where the measure of the angle between A and B is 120∘, find (+)⋅(−2)ABAB correct to the nearest hundredth.
Q2:
Suppose 𝐴𝐵𝐶𝐷 is a square of side 47. Determine 𝐴𝐵⋅𝐴𝐶.
Q3:
Suppose a rectangle 𝐴𝐵𝐶𝐷 with 𝐴𝐵=32 and 𝐵𝐶=11. Determine 𝐴𝐶⋅𝐵𝐷.
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