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If the pair of lines given by (x^(2)+y^(...

If the pair of lines given by `(x^(2)+y^(2)) sin ^(2) alpha=(x cos alpha-y sin alpha)^(2)` are perpendicular to each other then `alpha=`

A

`(pi)/(2)`

B

0

C

`(pi)/(4)`

D

`(pi)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
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