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Mathematics 21 Online
OpenStudy (callisto):

Trigo question # ?

OpenStudy (callisto):

OpenStudy (callisto):

This time, I can't even get one of the answers

OpenStudy (phi):

you have two factors. one or both must be 0 for a solution (cos x -3 ) will never be zero for real x so you solve 3 sin x - 2 =0 sin x= 2/3 There will be 2 solutions between 0 and 2pi

OpenStudy (callisto):

So , i need to take arc sine?

OpenStudy (dumbcow):

yep

OpenStudy (callisto):

Oh.. I know where I got wrong, thanks!!!

OpenStudy (phi):

Be sure you are in radian mode. (but you know that already)

OpenStudy (callisto):

That's where I got wrong... No wonder why I couldn't find out the answer before. Thanks!!!

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