Let a⃗ = i⃗ + 2j⃗ – k⃗, b⃗ = 2i⃗ – j⃗ + 3k⃗ and γ⃗ = 2i⃗ + j⃗ + 6k⃗ be three vectors. If a⃗ and b⃗ are both perpendicular to the vector δ⃗ and δ⃗ · γ⃗ = 10, then what is the magnitude of δ⃗?
Mathematics
2017
NDA Mathematics 2017
NDA 2017
Options
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