Find the angle between the planes 2x+y-2z=5 and 3x-6y-2z=7 The answer given in the book is:cos^(-1)?(4/21)

Asked by Manoj | 3rd Jun, 2013, 06:01: PM

Expert Answer:

The acute angle p between the planes a1x + b1y + c1z = d1 and a2x + b2y + c2z = d2 is given as 

Answered by  | 4th Jun, 2013, 12:09: AM

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