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Mathematics 9 Online
OpenStudy (anonymous):

Help please! simplify cos(126°)cos(36°) + sin(126°)sin(36°)

OpenStudy (anonymous):

cos(126°)cos(36°) + sin(126°)sin(36°) = cos (126° - 36°) = cos (90°) =0

OpenStudy (anonymous):

hope this helped

OpenStudy (anonymous):

yes thank you!

OpenStudy (anonymous):

your welcome

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