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Mathematics 21 Online
OpenStudy (anonymous):

What is the exact value of cos 225° cos 75°?

OpenStudy (holly00d1248):

Whats COS

OpenStudy (anonymous):

cosine

OpenStudy (holly00d1248):

what does that mean cosine

OpenStudy (anonymous):

What is the exact value of cos 225° cos 75°?

OpenStudy (anonymous):

just ignore the question marks lol

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