Coplanar Vectors Sum (Jee Mains) | ExamDuo
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Scalar and Vector Triple Products
Medium
Coplanar Vectors Sum
Let S be the set of all (λ, μ) for which the vectors λi - j + k, i + 2j + μk and 3i - 4j + 5k, where λ - μ = 5 are coplanar, then
∑
(λ, μ) ϵ S
80 (λ² + μ²) is equal to
SELECT ONE OPTION
A
2370
B
2130
C
2290
D
2210
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