Q. 104.4( 23 Votes )

Find the angle between the following pairs of lines:


Answer :

We know that

If θ is the acute angle between and , then


……(i)


(i) and


Here and


So, from (i), we have


……(ii)




And


Now,



By (ii), we have




(ii) and


Here, and


So, from (i), we have


…(iii)




And


Now,



By (iii), we have




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