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Mathematics 20 Online
OpenStudy (unbelievabledreams):

Confusing math question

OpenStudy (anonymous):

There is no value of theta in cos(theta) that would equal 4. So you are right, it is undefined.

OpenStudy (anonymous):

It is not correct.

OpenStudy (anonymous):

Your equation equals \[(sinx+1)(sinx+1)=0\] Understand how I got that? And know how to solve this?

OpenStudy (unbelievabledreams):

Yes, you factored it. I solved it. It is 3pi/2, right?

OpenStudy (anonymous):

Yea, that is the only theta in the interval [0,2pi] where sinx=-1

OpenStudy (unbelievabledreams):

Are there suppose be two? How about -pi/2?

OpenStudy (anonymous):

Interval is [0,2pi] -2pi is less than 0.

OpenStudy (anonymous):

interval is in x

OpenStudy (anonymous):

i mean theta lol

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