Explain how to find the value of sin 390 and cos (-45) using the unit circle.

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Explain how to find the value of sin 390° and cos (-45°) using the unit circle.

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Precalculus

ISBN: 978-0321716835

9th edition

Authors: Michael Sullivan

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Question Posted: Feb 24, 2020 11:28 AM

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Explain how to find the value of sin 390 and cos (-45) using the unit circle.

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1 sin390 sin360 30 sin30 in triangle ...View the full answer

Precalculus

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