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OpenStudy (anonymous):
Find all solutions of the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) 7 cos θ + 1 = 0
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OpenStudy (tkhunny):
Have you considered solving for \(\cos(\theta)\)?
OpenStudy (anonymous):
Yeah I got .14+2kpi, but I need another answer. I'm not sure how to find the second half.
OpenStudy (tylerd):
|dw:1415421582469:dw|
OpenStudy (tkhunny):
\(\cos(\theta) = \cos(2\pi - \theta)\). It's like a thing.
OpenStudy (tylerd):
pi-1.4 radians pi+1.4radians
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OpenStudy (tylerd):
the adjacent side is negative. so your dealing with quadrants 2 and 3
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