Answer:
B
Step-by-step explanation:
Using the sine ratio in the right triangle
sin17° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{AC}{AB}[/tex] = [tex]\frac{AC}{42}[/tex] ( multiply both sides by 42 )
42 × sin17° = AC then
AC ≈ 12.28 ( to 2 dec.places ) → B
