How to solve this trig function for all the values of x:

can someone please demonstrate how would I solve such problems step by step? I'm still trying to get my head around these trig functions.

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- Jun 5th 2009, 10:44 PMdwatTrig Function
How to solve this trig function for all the values of x:

can someone please demonstrate how would I solve such problems step by step? I'm still trying to get my head around these trig functions. - Jun 5th 2009, 11:27 PMRandom Variable

You want to find the angle (or angles) in the range given whose cosine is 1/2. There are two angles: and

so

or - Jun 5th 2009, 11:37 PMjamtheman
Dont forget that if possible the angle may be +or- 2*pi within the domain