Verify formula (5). [Hint: Use the identity 2 cosA cosB=cos(A+B)+cos(A-B) . ]

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Verify formula (5). [Hint: Use the identity 2 cosA cosB=cos(A+B)+cos(A-B) . ]

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Harold Edwards

12 days ago

Verify formula (5). [Hint: Use the identity 2 cosA cosB=cos(A+B)+cos(A-B) . ]

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Verify formula (5). [Hint: Use the identity 2 cosA cosB=cos(A+B)+cos(A-B) . ]