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Leona [35]
3 years ago
14

Alice is skiing along a circular ski trail that has a radius of 2.5 km. She starts at the 3-o'clock position and travels in the

CCW direction. Alice stops sking when she is 2.251 km to the right and 1.087 km above the center of the ski trail. Imagine an angle with its vertex at the center of the circular ski trail that subtends Alice's path.
a. How many radians has the angle swept out since Alice started skiing?


b. How many km has Alice skied since she started skiing?

Mathematics
2 answers:
MaRussiya [10]3 years ago
8 0

Find the given attachment

LekaFEV [45]3 years ago
7 0

Answer:

a) \theta = 0.143\,rad, b) \Delta s = 0.358\,km

Step-by-step explanation:

a) The change in angular position is:

\theta = \tan^{-1} \frac{1.087\,km}{2.251\,km}

\theta = 0.143\,rad

b) The distance travelled by Alice is:

\Delta s = \theta \cdot r

\Delta s = (0.143\,rad)\cdot (2.5\,km)

\Delta s = 0.358\,km

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9514 1404 393

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