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The vector equations of two lines L1 an...

The vector equations of two lines `L_1 and L_2` are respectively `vec r=17hat i–9hat j+9hat k+ lambda(3hat i +hat j+ 5hat k) and vec r=15hat i–8hat j-hat k+mu(4hat i+3hat j)` `I` `L_1 and L_2` are skew lines `II` `(11, -11, -1)` is the point of intersection of `L_1 and L_2` `III` `(-11, 11, 1)` is the point of intersection of `L_1 and L_2`. `IV ` `cos^-1 (3/sqrt35)` is the acute angle between `L_1 and L_2` then , which of the following is true?

A

II abd IV

B

I and IV

C

Only IV

D

III and IV

Text Solution

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The correct Answer is:
(b)
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