QUESTION IMAGE
Question
bc = \square \
redondea tu respuesta a la centésima más cercana.\
(there is a right triangle with right angle at c, ac = 4, angle at b is 20°, and we need to find bc)
Step1: Identificar la función trigonométrica
En el triángulo rectángulo \( ABC \) con \( \angle C = 90^\circ \), \( \angle B = 20^\circ \) y \( AC = 4 \). Usamos la tangente: \( \tan(\theta)=\frac{\text{opuesto}}{\text{adyacente}} \). Aquí, \( \tan(20^\circ)=\frac{AC}{BC} \), entonces \( \tan(20^\circ)=\frac{4}{BC} \).
Step2: Resolver para \( BC \)
Reordenar la fórmula: \( BC = \frac{4}{\tan(20^\circ)} \). Calcular \( \tan(20^\circ) \approx 0.3640 \). Entonces \( BC = \frac{4}{0.3640} \approx 10.99 \).
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\( 10.99 \)