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OpenStudy (anonymous):
I think this question is bugged: (sin(5x)+sin(7x))/(cos(5x)+cos(7x)) equals to: cotx. -cotx. tanx. -tanx. I dont see how this could possibly equal any of those
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jimthompson5910 (jim_thompson5910):
It doesn't. I just checked all four and none of them match the original (I graphed each).
jimthompson5910 (jim_thompson5910):
So yeah there's a typo somewhere
OpenStudy (anonymous):
This system can be bugged. Once every two tests or so i have to write to the teacher about this kind of thing happening. Not a big deal but very annoying when im not 100% certain im right.
jimthompson5910 (jim_thompson5910):
the actual answer is tan(6x) but sadly that isn't listed
OpenStudy (loser66):
Did you miss 6 in the options? I mean tan (6x) instead of tan x?
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