Trigonometry Examples

$\sqrt{- \frac{1}{49}}$

Step 1

Rewrite $- \frac{1}{49}$ as ${(\frac{i}{7})}^{2}$ .

$\sqrt{{(\frac{i}{7})}^{2}}$

Step 2

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

$\frac{i}{7}$