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 .
Answer
Selection 1:
power reducing
Selection 2:
substitution

Question

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 .

Revolt · Accepted Answer

power reducing; Selection 1: power reducing; Selection 2: substitution

Trigonometric Half Angle Identities

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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