### Home > GC > Chapter 11 > Lesson 11.1.1 > Problem11-13

11-13.

Multiple Choice: $ΔABC$ has a right angle at $B$. If $m∠A = 42º$ and $BC=7$ mm, what is the approximate length of $\overline{AC}$?

1. $9.4 \; \text{mm}$

1. $10.5 \; \text{mm}$

1. $7.8 \; \text{mm}$

1. $4.7 \; \text{mm}$

What trig ratio can you use to solve for $AC$?

(b) $10.5 \; \text{mm}$