Line BC is tangent to the circle centered at A. Find the measure of angle BCA. Explain or show your reasoning. 57° Angle CBA measures [ Select ] degrees, because tangent lines are [ Select] to a radius drawn to the point of tangency. The measures of the angles in a triangle add up to ( Select] |degrees, so we can subtract 57 and 90 from 180 to find that the measure of angle BCA is [ Select ) degrees.

Line BC is tangent to the circle centered at A. Find the measure of angle BCA. Explain or show your reasoning. 57° Angle CBA measures [ Select ] degrees, because tangent lines are [ Select] to a radius drawn to the point of tangency. The measures of the angles in a triangle add up to ( Select] |degrees, so we can subtract 57 and 90 from 180 to find that the measure of angle BCA is [ Select ) degrees.

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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Question

Line BC is tangent to the circle centered at
A. Find the measure of angle BCA. Explain or
show your reasoning.
57°
Angle CBA measures ( Select]
degrees, because tangent lines are
[ Select ]
to a radius drawn to the point of tangency. The measures
of the angles in a triangle add up to ( Select]
|degrees, so we can
subtract 57 and 90 from 180 to find that the measure of angle BCA is
[ Select )
degrees.

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