1.

Find the distance between parallel lines i. 15x+8y-34= 0 and 15x+8y+31=0  ii. l(x + y) + p = 0 and l(x + y) - r = 0.

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Answer :`(i) 65/17 ` units, (ii) `1/sqrt 2 |(p + R)/l|` units.


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