SOLUTION: ladder 18ft long leans against vertical wall and makes angle of 72 degrees with level ground. how highup the wall does hte ladder reach to nearest tenth of foot

Question 83668: ladder 18ft long leans against vertical wall and makes angle of 72 degrees with level ground. how highup the wall does hte ladder reach to nearest tenth of foot
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
ladder 18ft long leans against vertical wall and makes angle of 72 degrees with level ground. how high up the wall does the ladder reach to nearest tenth of foot
:
We can use the sine for this, side opposite (x); is the height of the ladder:
:
Sin(72) =
.951 =
x = 18 * .951
:
x = 17.1 ft
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