The angle between the lines r^{\to} = 3i^{\^} + 2j^{\^}−4k^{\^} + \lambda (i^{\^} + 2j^{\^} + 2k^{\^}) and r^{\to} = 5j^{\^}−2k^{\^} + \mu (3i^{\^} + 2j^{\^} + 6k^{\^}) is:

Correct Answer is : cos−1⁡(1921)

\sin ^{−1}⁡ (\frac{19}{21})

\cos ^{−1}⁡ (\frac{19}{23})

\cos ^{−1}⁡ (\frac{19}{21})

\sin ^{−1}⁡ (\frac{19}{23})

CUET UG Math 19 Jun 2023 Paper

Question : 41 of 50

Marks: +1, -0

The angle between the lines

r↖{→} = 3i↖{\^} + 2j↖{\^}−4k↖{\^} + λ (i↖{\^} + 2j↖{\^} + 2k↖{\^})

and

r↖{→} = 5j↖{\^}−2k↖{\^} + µ (3i↖{\^} + 2j↖{\^} + 6k↖{\^})

is:

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