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

Question

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

jim_thompson5910 · Answer

It doesn't. I just checked all four and none of them match the original (I graphed each).

jim_thompson5910 · Answer

So yeah there's a typo somewhere

anonymous · Answer

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.

jim_thompson5910 · Answer

the actual answer is tan(6x) but sadly that isn't listed

loser66 · Answer

Did you miss 6 in the options? I mean tan (6x) instead of tan x?