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Mathematics 9 Online
OpenStudy (anonymous):

Help! Which of the following is equivalent to cos y?

OpenStudy (anonymous):

sin x sin y tan x tan y

OpenStudy (anonymous):

OpenStudy (haleyelizabeth2017):

Didn't we already solve this one? O.o

OpenStudy (anonymous):

do you know the rules for trig functions?

OpenStudy (anonymous):

Different one lol and somewhat

OpenStudy (anonymous):

sin x

OpenStudy (anonymous):

You sure?

OpenStudy (anonymous):

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