Answer:
z ≈ 145.62
Step-by-step explanation:
using the sine ratio in the right triangle
sin18° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{45}{z}[/tex] ( multiply both sides by z )
z × sin18° = 45 ( divide both sides by sin18° )
z = [tex]\frac{45}{sin18}[/tex] ≈ 145.62 ( to the nearest hundredth )
