Answer:
A. 8 feet. B 6.9 feet.
Step-by-step explanation:
We use trigonometry of a right-angled triangle.
A. sin 30 = opposite / hypotenuse
= height of wall / length of the skateboard (x)
= 4 / x
x* sin 30 = 4
x = 4 / sin 30
= 4 / 1/2
= 8 feet (answer).
B . tan 30 = opposite / adjacent (x)
= 4 / x
x tan 30 = 4
x = 4 / tan 30
= 6.9 feet ( to nearest tenth)
