Saturday
December 3, 2016

Homework Help: Math

Posted by Katie on Wednesday, February 25, 2009 at 7:12pm.

I have the answer to this question but I have no idea how to get there.

Solve for all values of x if 0¡x¡2¥ð.
cos©÷(4x)+cos(4x)=0

The answer I have is:
x=¥ð/8, 3¥ð/8, 5¥ð/8, 7¥ð/8, 9¥ð/8, 11¥ð/8, 13¥ð/8, ¥ð/4,3¥ð/4, 5¥ð/4, 7¥ð/4

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