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Find the angle between the lines whose d...

Find the angle between the lines whose direction-cosines are given by :
(i) l + m + n = 0, `l^(2) + m^(2) - n^(2) = 0 `
(ii) 2l - m + 2n = 0 , mn + nl + lm = 0 ,

Text Solution

Verified by Experts

The correct Answer is:
(i) ` 60^(@) (ii) 90^(@)`
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