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The acute angle between the line joining...

The acute angle between the line joining the points `(2,1,-3)` and `(-3,1,7)` and a line parallel to
`(x-1)/3=y/4=(z+3)/5` through the point `(-1,0,4)` is

A

(a) `cos^(-1)((7)/(5sqrt(10)))`

B

(b) `cos^(-1)((1)/(sqrt(10)))`

C

(c) `cos^(-1)((3)/(5sqrt(10)))`

D

(d) `cos^(-1)((1)/(5sqrt(10)))`

Text Solution

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The correct Answer is:
A
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