Asked by McKenna Louise
A helicopter hovers 105 m above the end of an island. If the angle from the helicopter down to the other end of the esland is 13deg30', find the length of the island.
Answers
Answered by
Reiny
make a diagram showing a sideview.
remember the angle of depression from the helicopter view is equal to the angle of elevation from groundview.
So I have a right-angled triangle, with a height of 105 (opposite side), the adjacent side of x and an angle of 30.5
take it from there
remember the angle of depression from the helicopter view is equal to the angle of elevation from groundview.
So I have a right-angled triangle, with a height of 105 (opposite side), the adjacent side of x and an angle of 30.5
take it from there
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