Answer:
h ≈ 21.2 cm
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan23° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{9}{h}[/tex] ( multiply both sides by h )
h × tan23° = 9 ( divide both sides by tan23° )
h = [tex]\frac{9}{tan23}[/tex] ≈ 21.2 cm ( to 1 dec. place )
