Answer:
[tex]\huge\boxed{\sf BC = 19.4 \ cm}[/tex]
Step-by-step explanation:
Given:
θ = 71°
Adjacent = AB = 6.3 cm
Required:
Hypotenuse = BC = ?
We will use the trigonometric ratio of cos.
[tex]\displaystyle cos \theta = \frac{Adjacent}{Hypotenuse} \\\\cos \ 71 = \frac{6.3}{BC} \\\\0.33 = \frac{6.3}{BC} \\\\BC =\frac{6.3}{0.33} \\\\\boxed{BC = 19.4 \ cm}\\\\\rule[225]{225}{2}[/tex]
