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यदि सरल रेखा x cos alpha + y sin alpha =...

यदि सरल रेखा `x cos alpha + y sin alpha = p`, अतिपरवलय `(x^(2))/(a^(2)) - (y^(2))/(b^(2)) = 1` को स्पर्श करती है, तो-

A

`p^(2) = a^(2) cos^(2) alpha + b^(2) sin^(2) alpha`

B

`p^(2) = a^(2) cos^(2) alpha - b^(2) sin^(2) alpha`

C

`p^(2) = a^(2) sin^(2) alpha + b^(2) cos^(2) alpha`

D

`p^(2) = a^(2) sin^(2) alpha - b^(2) cos^(2) alpha`

लिखित उत्तर

Verified by Experts

The correct Answer is:
B
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