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Mathematics 17 Online
OpenStudy (mishapocolypse0314):

solve; 31. sin(3/5+4/5) so far i figured out- Sin3/5cos4/5+cos3/5sin4/5 but from there im stuck and i know im supposed to somehow get 7/25 but i dont know how

OpenStudy (mishapocolypse0314):

same thing with 33. cos(3/5+4/5)

OpenStudy (mishapocolypse0314):

will fan and medal :) plz halp

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