Skateboard ramp is placed against a 4 foot high wall with the angle of elevation to be 30° with the ground round to the nearest tenth of a foot is the length of the skateboard ramp far away is the base of the skateboard ramp with the wall

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)

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