How do you graph $r=-4/costheta$ ?

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Answer 1 · 2016-12-17T17:15:22

This is a vertical line at $x = -4$ . Please see the explanation.

Given: $r = -4/cos(theta)$

Multiply both sides by $cos(theta)$ :

$rcos(theta) = -4$

Substitute x for $rcos(theta)$ :

$x = -4$

How do you graph r=-4/costhetar=-4/costheta?