Q3
Find the value of p for which the following planes are perpendicular to each other :

(i) r^→(pi^{^}+2j^{^}+3k^{^}) =5 and r^→(i^{^}+2j^{^}-7k^{^}) +11=0

(ii) x-4y+ pz+3=Oand2x+2y+3z=5.

Solution

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