Tuesday

January 27, 2015

January 27, 2015

Posted by **Danny** on Monday, June 15, 2009 at 6:38pm.

My answer: (pi/4)+2(pi)k, (7pi/4) + 2(pi)k

Solve 2cos^2 x-5cosx+2=0 for principal values of x.

My answer: 60 and 300 degrees

- Pre Cal -
**Reiny**, Monday, June 15, 2009 at 8:43pmVery good, I agree with both answers.

Is there any reason why you gave the first answers in radians and the second in degrees?

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