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MTALHAHASSAN2
 one year ago
Need help!!
4. Solve for x: cos 3x=1/2 0<x<pie
MTALHAHASSAN2
 one year ago
Need help!! 4. Solve for x: cos 3x=1/2 0<x<pie

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Mertsj
 one year ago
Best ResponseYou've already chosen the best response.2If you want all x solutions between 0 and pi, find all 3x solutions between 0 and 3pi

Mertsj
 one year ago
Best ResponseYou've already chosen the best response.2\[\cos (3x)=\frac{1}{2}\] \[3x=\frac{\pi}{3}, \frac{7\pi}{3},\frac{13\pi}{3}\]

Mertsj
 one year ago
Best ResponseYou've already chosen the best response.2\[x=\frac{\pi}{9},\frac{7\pi}{9}, \frac{13\pi}{9}\]

Mertsj
 one year ago
Best ResponseYou've already chosen the best response.2Whoops...one too many. Discard 13pi/9

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0wait how you get 7pie/3

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0know how can I find the other solutions

Mertsj
 one year ago
Best ResponseYou've already chosen the best response.2Each time around the circle will give another solution.

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0don't you get 5pie/3

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0dw:1437704060359:dw

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0because in the first and fourth quardrant the cos be postive

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0I now that is 7pie/3

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0But I am talking about 5pie/3

Mertsj
 one year ago
Best ResponseYou've already chosen the best response.2Yep. \[3x=\frac{\pi}{3}, \frac{5\pi}{3}, \frac{7\pi}{3}\]

Mertsj
 one year ago
Best ResponseYou've already chosen the best response.2\[x=\frac{\pi}{9}, \frac{5\pi}{9}, \frac{7\pi}{9}\]

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0know that make a sence but know for the 7pie/3 we are adding 2pie+pie/3 right!!

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0dw:1437704505385:dw
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