1. If the platform has been turning for 25 seconds, it has moved through an angle of 225° and is in the third quadrant of its cycl a. Use a diagram like the one shown here to find the value of sin 225° based on the coordinate definition of the sine function. First choose a specific value for r. Then find the value of y using the right triangle.

1. If the platform has been turning for 25 seconds, it has moved through an angle of 225° and is in the third quadrant of its cycl a. Use a diagram like the one shown here to find the value of sin 225° based on the coordinate definition of the sine function. First choose a specific value for r. Then find the value of y using the right triangle.

Trigonometry (11th Edition)

11th Edition

ISBN:9780134217437

Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels

Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels

Chapter1: Trigonometric Functions

Section: Chapter Questions

Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.

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1. If the platform has been turning for 25 seconds, it has moved
through an angle of 225° and is in the third quadrant of its cycle.
a. Use a diagram like the one shown here
to find the value of sin 225° based on the
coordinate definition of the sine function.
First choose a specific value for r. Then find
the value of y using the right triangle.
22

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