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If theta is the angle between the diagon...

If `theta` is the angle between the diagonals of a parallelogram `ABCD` whose vertices are `A(0,2), B(2, -1), C(4,0)` and `D(2, 3).` Show that `tan theta = 2.`

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The correct Answer is:
`tan^(-1)2`
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MODERN PUBLICATION-STRAIGHT LINES -Exercise 10(f)
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