Lisa has not yet learned how to stop on ice skates, so she just skates straight across the circular rink until she reaches a wall. If she starts at P, turns 75° at Q, and turns 100° at R, find how many degrees she must turn at S to go back to her starting point.

Lisa has not yet learned how to stop on ice skates, so she just skates straight across the circular rink until she reaches a wall. If she starts at P, turns 75° at Q, and turns 100° at R, find how many degrees she must turn at S to go back to her starting point.

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

ChapterP: Preliminary Concepts

SectionP.CT: Test

Problem 1CT

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Concept explainers

Ratios

A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.

Trigonometric Ratios

Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.

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P.
75°
100°
R.
o she just skates straight across the
P, turns 75° at Q, and turns 100° at R, find
her starting point.

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