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Mathematics 12 Online
OpenStudy (anonymous):

Write the expression as either the sine, cosine, or tangent of a single angle. cosine of pi divided by five times cosine of pi divided by seven plus sine of pi divided by five times sine of pi divided by seven.

OpenStudy (anonymous):

Just subtract the first term to the second term.

OpenStudy (anonymous):

Are you sure that's how it is?

OpenStudy (anonymous):

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