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For any two vectors, |a + b| and |a| + |b| are related by
A|a + b| ≥ |a| + |b|
B|a + b| ≤ |a| + |b|
C|a + b| = |a| − |b|
D|a + b| < |a| − |b|
Answer & Solution
Correct answer: B. |a + b| ≤ |a| + |b|
One side of a triangle can never exceed the sum of the other two sides, which is the triangle inequality.
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