Question

Find the angle between the lines whose
d.c's are related by I+m+n=0 and
l+m2-n2=0​

Answer 1

Explanation:

We have,  l + m + n = 0, l2 + m2 – n2 = 0. Read more on Sarthaks.com - https://www.sarthaks.com/141116/find-the-angle-between-the-lines-whose-direction-cosines-are-given-by-the-equations-l-m-n-0-l