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Analyze the proof. Use the drop-down boxes to complete the sentences.

The third line of this proof is known as the . identity of cosine. The justification for the fourth line is .

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User Ashwoods
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2 Answers

3 votes

Answer:

Answer is power reducing and substitution

Explanation:

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User Ahmed Farahat
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6 votes

Answer:

Answer is power reducing and substitution

Explanation:

EDGE 2020

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User Gary W
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