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The acute angle between the lines having...

The acute angle between the lines having direction ratios
`5,4,1` and `-3,2,1` is

A

(a) `cos^(-1)(sqrt(3)/(6))`

B

(b) `cos^(-1)((5)/(sqrt(3)))`

C

(c) `cos^(-1)((sqrt(3))/(7))`

D

(d) `cos^(-1)((sqrt(7))/(3))`

Text Solution

Verified by Experts

The correct Answer is:
C
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