Answer:
[tex]BC=4.42[/tex]
Step-by-step explanation:
Given:
∠B=70°
AB=13
cos(B°)= [tex]\frac{Base}{Hypotenuse}[/tex]
cos(70°)= [tex]\frac{BC}{13}[/tex]
Given: cos(70°)≈0.34
[tex]0.34=\frac{BC}{13} \\\\BC=0.34*13\\\\BC=4.42[/tex]
The measurement of BC is
[tex]BC=4.42[/tex]
