Q26. Let l, m , n and l+81, m + om, n + δη are dc" of two adjacent l – InterviewSolution

1.	Q26. Let l, m , n and l+81, m + om, n + δη are dc" of two adjacent lines andδ¡n every smallangle between them then prove that(69)2 (δ1)24(δm)24(δη)2ORIf d.c are related as I+m+n-0 and I'+m2-n2-0 of two lines then find angle between them.
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