Asked by anna
A road 1.6 km long rises 400 m. What is the angle of elevation of the road?
I don't known which numbers go to which sides. I can do the rest once I can label the triangle. Thanks!
I don't known which numbers go to which sides. I can do the rest once I can label the triangle. Thanks!
Answers
Answered by
Reiny
In your right-angled triangle, the hypotenuse would be the 1.6 km road and its height would be the 400 m
The horizontal, or the "run", would be the side you have to find by Pythagoras.
Don't forget to change to either metres or km.
The horizontal, or the "run", would be the side you have to find by Pythagoras.
Don't forget to change to either metres or km.
Answered by
anna
THATS WHY I COULDN'T GET THE RIGHT ANSWER! i didn't convert the meters! thank you
Answered by
drwls
The rise is the vertical dimension y and the length of the road (1.6 km) is the hypotenuse of a right triangle-- tha actual distance covered.
On a map, the length of the road would be the x (horizontal) distance covered, but that is not what I think they mean by the "road length" here.
The angle of elevation is
sin^-1 0.4/1.6 = sin ^-1 0.25
= 14.48 degrees
On a map, the length of the road would be the x (horizontal) distance covered, but that is not what I think they mean by the "road length" here.
The angle of elevation is
sin^-1 0.4/1.6 = sin ^-1 0.25
= 14.48 degrees
Answered by
anna
yes that's the answer i got drwls thanks the m km messed me up =]
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