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For any four points O(0,0,0),P(1,2,1),Q(...

For any four points O(0,0,0),P(1,2,1),Q(2,3,0),R(0,1,-1), the angle between the planes OPQ and PQR is

A

`cos^(-1)((5)/(sqrt(28)))`

B

`sin^(-1)((5)/(sqrt(28)))`

C

`cos^(-1)((5)/(sqrt(14)))`

D

`sin^(-1)((5)/(sqrt(14)))`

Text Solution

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The correct Answer is:
A
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