## Trigonometry (11th Edition) Clone

1. No matter which two sides you have, as you can use trig functions(cosine, sine, and tangent) and inverse of them (secant, cosecant and cotangent to find one of the acute angles of triangle). $\sin\theta = \frac{opp}{hyp}$ $\cos\theta = \frac{adj}{hyp}$ $\tan\theta =\frac{opp}{adj}$ 2. We also can find the other acute angle by using formula of the sum of angles in a triangle. $180^{\circ} = \angle A + \angle B +90^{\circ}$