Valerie drives 500 meters up a hill that makes an angle of 15° with the horizontal. To the nearest tenth of a meter, what horizontal distance has she covered?
Question
Answer:
For this case we can model the problem as a rectangle triangle.We know:
Length of the hypotenuse
Angle between the base of the triangle and the hypotenuse.
We want to know:
Length of the base.
For this we use the following trigonometric relationship:
[tex]cos (15) = \frac{x}{500} [/tex]
Clearing x we have:
[tex]x = 500 * cos (15) x = 482.96[/tex]
Rounding to the nearest tenth of a meter:
[tex]x = 483.0 m [/tex]
Answer:
The horizontal distance she has covered is:
[tex]x = 483.0 m[/tex]
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10 months ago
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