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If P(1) and p(2) are the lenghts of the ...

If `P_(1) and p_(2)` are the lenghts of the perpendiculars drawn from the origin to the two lines
x sec `alpha` +y . Cosec `alpha` =2a
and x. cos `alpha` +y. sin `alpha`=a. cos 2 `alpha`,
show that `P_(1)^(2)+P_(2)^(2)` is constant for all values of `alpha` .

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MARVEL PUBLICATION-STRAIGHT LINE-MISCELLANEOUS MCQS
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  2. If the point P(p,q) is equidistant from the points A(a+b,b-a)and B(a-b...

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  3. Prove that the points (a+b+c),(b,c+a) and (c,a+b) are collinear.

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  8. The equations of sides of a triangle are x+3y=0 , 4x-3y=5 and 3x-y=0....

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