Subjects trigonometry

Law Of Sines C 453052

Step-by-step solutions with LaTeX - clean, fast, and student-friendly.

Use the AI math solver

Question: Solve for $c$. Given angles $B = 27^\circ$, $A = 34^\circ$, side $b = 11$, and using the Law of Sines: $\frac{\sin A}{a} = \frac{\sin B}{b} = \frac{\sin C}{c}$. Find $C$ and then $c$. Round your answer to the nearest hundredth.
1. **State the problem:** We are given a triangle with angles $A = 34^\circ$, $B = 27^\circ$, and side $b = 11$. We need to find side $c$ opposite angle $C$, and angle $C$ itself. 2. **Find angle $C$:** The sum of angles in a triangle is $180^\circ$. $$ C = 180^\circ - A - B = 180^\circ - 34^\circ - 27^\circ = 119^\circ $$ 3. **Use the Law of Sines:** $$ \frac{\sin A}{a} = \frac{\sin B}{b} = \frac{\sin C}{c} $$ We want to find $c$, so use: $$ \frac{\sin B}{b} = \frac{\sin C}{c} $$ Rearranged to solve for $c$: $$ c = \frac{b \sin C}{\sin B} $$ 4. **Calculate $c$:** $$ c = \frac{11 \times \sin 119^\circ}{\sin 27^\circ} $$ Calculate the sines: $$ \sin 119^\circ \approx 0.8746 $$ $$ \sin 27^\circ \approx 0.45399 $$ So: $$ c = \frac{11 \times 0.8746}{0.45399} $$ 5. **Simplify the fraction:** $$ c = \frac{\cancel{11} \times 0.8746}{0.45399} = \frac{9.6206}{0.45399} $$ 6. **Divide:** $$ c \approx 21.19 $$ **Final answer:** Side $c$ is approximately $21.19$ units.
BACb=11c27°34°119°