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OpenStudy (anonymous):
4sinxcosx + 2sinx - 2cosx -1 = 0
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OpenStudy (anonymous):
facotr by grouping
OpenStudy (anonymous):
how
OpenStudy (anonymous):
(4sinxcosx + 2sinx) - (2cosx +1) = 0 what can you do from here?
OpenStudy (anonymous):
idk
OpenStudy (anonymous):
is there are common factor in the first pair of parenthesis ?
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OpenStudy (anonymous):
oui
OpenStudy (anonymous):
???
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
ok what is it?
OpenStudy (anonymous):
2cox + 1
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OpenStudy (anonymous):
thx
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