Mathematics · Vector Algebra
Let vector a = 2î - 7ĵ + 5k̂, vector b = î + k̂ and vector c = î + 2ĵ - 3k̂ be three given vectors. If vector r is a vector such that vector r × vector a = vector c × vector a and vector r • vector b = 0, then |vector r| is equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1√9147
- 2115√2
- 3117
- 4117√2✓
Correct answer
117√2
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