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Mathematics 13 Online
OpenStudy (anonymous):

CALCULUS III: Find the angle between the planes x-y+z=2 and 2x+3y-4z=5

OpenStudy (amistre64):

its the angle between the normals ......

OpenStudy (amistre64):

|dw:1376145823509:dw|

OpenStudy (amistre64):

|dw:1376145856920:dw|

OpenStudy (anonymous):

So just the inverse cosign of normalA dot angle B over amag bmag?

OpenStudy (amistre64):

nA dot nB arccos (-----------) |mag nA| |mab nB| yep

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