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Back to 5.2 Unit Circle: Sine and Cosine Functions

5.2 Exercise 115

Avg difficulty 2.5

Use this scenario: A child enters a carousel that takes one minute to revolve once around. The child enters at the point ( 0,1 ), \left(0 , 1\right) , that is, on the due north position. Assume the carousel revolves counter clockwise.

What are the coordinates of the child after 90 seconds?

OpenStax Precalculus 2e, 5.2 Unit Circle: Sine and Cosine Functions, exercise 115

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Adapted from College Algebra © 2021 Rice University. Licensed under CC BY 4.0. Sources: College Algebra 2e, Algebra and Trigonometry 2e, Precalculus 2e, College Algebra with Corequisite Support 2e. Imported at revision 4922e46.