1.

If the normal drawn from the origin to the straight line 2x+7y+6=0 makes an angle theta with the postitive X-axis, then theta=

Answer»

`TAN^(-1)""(7)/(2)`
`pi-tan^(-1)""(7)/(2)`
`pi+tan^(-1)""(7)/(2)`
`-tan^(-1)""(7)/(2)`

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