Find the exact value of expression. Do not use a calculator. tan(-20) cot 20

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Find the exact value of expression. Do not use a calculator.

tan(-20°) cot 20°

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Precalculus

ISBN: 978-0321716835

9th edition

Authors: Michael Sullivan

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Question Posted: Jan 24, 2019 06:35 AM

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Find the exact value of expression. Do not use a calculator. tan(-20) cot 20

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Precalculus

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