1. **State the problem:** We have a right triangle with angle $A = 39^\circ$, right angle at $B$, and side $BC = 2$. We need to find side $AC = x$.
2. **Identify the sides relative to angle $A$:**
- Side $BC = 2$ is adjacent to angle $A$.
- Side $AC = x$ is opposite angle $A$.
3. **Use the tangent function:**
The tangent of an angle in a right triangle is the ratio of the opposite side to the adjacent side:
$$\tan(A) = \frac{\text{opposite}}{\text{adjacent}} = \frac{x}{2}$$
4. **Solve for $x$:**
$$x = 2 \times \tan(39^\circ)$$
5. **Calculate $\tan(39^\circ)$:**
Using a calculator, $\tan(39^\circ) \approx 0.8098$
6. **Find $x$:**
$$x = 2 \times 0.8098 = 1.6196$$
7. **Round to the nearest hundredth:**
$$x \approx 1.62$$
**Final answer:** $x = 1.62$
Triangle Side 5C2F9D
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.