What Is Right Triangle Trigonometry?

$\theta=\sin^{-1}(\frac{b}{c})$

$\theta=\cos^{-1}(\frac{a}{c})$

$\theta=\tan^{-1}(\frac{b}{a})$

$\theta=90-\sin^{-1}(\frac{a}{c})$

$\theta=90-\cos^{-1}(\frac{b}{c})$

$\theta=90-\tan^{-1}(\frac{a}{b})$