Mathematics · Vectors
Let vector a = 2î + 3ĵ + 4k̂, vector b = î - 2ĵ + k̂, and vector c = î + ĵ - k̂ be three vectors. For a vector r satisfying vector r × vector a = vector b and vector r · vector c = 3, the value of |vector r| is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1√55
- 2√138
- 3√155✓
- 4√170
Correct answer
√155
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