Find the angle between the planes 6x-3y+7z=8 and 2x+3y-2z=5? – McqOptions

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1.	Find the angle between the planes 6x-3y+7z=8 and 2x+3y-2z=5?
A.	(cos^{-1} frac{ u206111}{ sqrt{98}} )
B.	(cos^{-1} u2061 frac{ u206111}{ sqrt{1598}} )
C.	(cos^{-1} frac{ u2061 u206113}{ sqrt{198}} )
D.	(cos^{-1} frac{ u2061 u206111}{1598} )
Answer» C. (cos^{-1} frac{ u2061 u206113}{ sqrt{198}} )

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