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If A(1,2), B(-3,2) and C(3,-2) are the v...

If `A(1,2)`, `B(-3,2)` and `C(3,-2)` are the vertices of `DeltaABC`, show that :
`(i) tanA=2`
`(ii) tanB=(2)/(3)`
`(iii) tanC=(4)/(7)`

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