Find the angle between the folowing planes :- (i) `vecr.(2hati-3hatj+4 – InterviewSolution

InterviewSolution

1.	Find the angle between the folowing planes :- (i) `vecr.(2hati-3hatj+4hatk) = 5` and `vecr.(-hati+hatj) = 1` (ii) `vecr.(2hati+3hatj-6hatk) = 1` and `vecr.(hati-2hatj+2hatk) + 3 = 0` (iii) `x+y-2z=3` and `2x-2y+z+1 = 0` (iv) `x+y-z=8` and `-x+2y+z-1 = 0`
Answer» Correct Answer - (i) `cos^(-1)((-5)/(sqrt(58)))` , (ii) `cos^(-1)((-16)/(21))` , (iii) `cos^(-1)((-2)/(3sqrt(6)))` , (iv) `(pi/2)`

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