Trigonometry Examples

$- \sqrt{- \frac{144}{361}}$

Step 1

Rewrite $- \frac{144}{361}$ as ${(\frac{12 i}{19})}^{2}$ .

$- \sqrt{{(\frac{12 i}{19})}^{2}}$

Step 2

Pull terms out from under the radical, assuming positive real numbers.

$- \frac{12 i}{19}$