use one of the triangles to approximate the ratio $\frac{bc}{ab}$. choo…

$use one of the triangles to approximate the ratio $\frac{bc}{ab}$. choo…$

use one of the triangles to approximate the ratio $\frac{bc}{ab}$. choose 1 answer: a 0.57 b 0.7 c 0.82 d 1.44

In right - triangle $ABC$ with $\angle C = 90^{\circ}$ and $\angle A=55^{\circ}$, $\sin A=\frac{BC}{AB}$.

We know that $\sin55^{\circ}\approx0.82$.

C. 0.82