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If the vertices of a triangle are A(1,4,...

If the vertices of a triangle are `A(1,4,2), B(-2,1,2),C(2,3,-4)` then find `/_A,/_B,/_C`.

Text Solution

Verified by Experts

The correct Answer is:
`lfloorA=(pi)/(2),lfloorB=cos^(-1)((3)/(2sqrt(7))),lfloorC=cos^(-1)sqrt((19)/(28))`
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