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DISCUSS DISCOVER PROVE WRITE [Hint: Find the area of triangle ABC in two different ways. You will need the following facts from geometry: 117. PROVE: Geometric Proof of a Double-Angle Formula Use the figure to prove that sin 20 = 2 sin 0 cos 0. An angle inscribed in a semicircle is a right angle, so LACB is a right angle. The central angle subtended by the chord of a circle is twice the angle subtended by the chord on the circle, so ZBOC is 20.] A B.

DISCUSS DISCOVER PROVE WRITE [Hint: Find the area of triangle ABC in two different ways. You will need the following facts from geometry: 117. PROVE: Geometric Proof of a Double-Angle Formula Use the figure to prove that sin 20 = 2 sin 0 cos 0. An angle inscribed in a semicircle is a right angle, so LACB is a right angle. The central angle subtended by the chord of a circle is twice the angle subtended by the chord on the circle, so ZBOC is 20.] A B.

Elementary Geometry For College Students, 7e
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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DISCUSS DISCOVER PROVE WRITE [Hint: Find the area of triangle ABC in two different ways. You will need the following facts from geometry: 117. PROVE: Geometric Proof of a Double-Angle Formula Use the figure to prove that sin 20 = 2 sin 0 cos 0. An angle inscribed in a semicircle is a right angle, so LACB is a right angle. The central angle subtended by the chord of a circle is twice the angle subtended by the chord on the circle, so ZBOC is 20.] A B.
Transcribed Image Text:DISCUSS DISCOVER PROVE WRITE [Hint: Find the area of triangle ABC in two different ways. You will need the following facts from geometry: 117. PROVE: Geometric Proof of a Double-Angle Formula Use the figure to prove that sin 20 = 2 sin 0 cos 0. An angle inscribed in a semicircle is a right angle, so LACB is a right angle. The central angle subtended by the chord of a circle is twice the angle subtended by the chord on the circle, so ZBOC is 20.] A B.
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