2. |u?| = 11, |v?| = 17, and the angle between u? and v? (when placed tail-to-tail) is 63°. Find |2u? + v?|. a. 39 c. 33.36 b. ?410 d. 28
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Step 1
Recall the formula for the magnitude of the sum of two vectors when scaled: |aA + bB| = √(a²|A|² + b²|B|² + 2ab|A||B|cosθ). Here, A = u, B = v, a = 2, b = 1, and θ = 63°. Show more…
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