Question Detail

PHY 101 PHY 101 Past Questions Objective Question
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Question

Find the angle between vectors A = 2i + 3j + 4k and B = i − 2j + 3k.
Options
A 46.6°
B 56.0°
Correct Answer
C 39.7°
D 0.397°
Correct Answer

Option B is the correct answer.

Detailed Explanation

Using dot product formula cosθ = (A·B)/|A||B| gives θ ≈ 56°.

Hint

Use A·B = |A||B|cosθ.

Question Info

Course: PHY 101
Topic: PHY 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 285 of 1250
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