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sin^2x+2sinxcosx-3cos^2x=0 if...

`sin^2x+2sinxcosx-3cos^2x=0` if

A

`tanx=3`

B

`tanx=-1`

C

`x=npi+pi/4,nin1`

D

`x=npi+tan^(-1)(-3),nin1`

Text Solution

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The correct Answer is:
C, D
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