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Mathematics 7 Online
OpenStudy (anonymous):

sin 57° cos 13° - cos 57° sin 13°

OpenStudy (anonymous):

As we know sin(a-b) = SinAcosB - cosAsinB sin(57-13) = sin 57 cos 13 - cos 57 sin 13 ans is sin 44.

OpenStudy (anonymous):

Thank you!!!

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