Asked by richard

Find all solutions for the following equation in the interval
0 ≤ x <2pi

3cos(3x)=6

i got cos3x=2, don't know how to go further i think it would be no solution but just want to confirm.
Answered by cass
find the exace value of sin(60 degree - 45 degree)
Answered by cass
find the exact value of sin(60 degree - 5 degree)
Answered by Reiny
You are right, there is no solution
cos(of any angle) must be between -1 and +1
Answered by cass
I don't show either of the anwere you have.
Answered by Reiny
do not post a question as a reply to another poster.
It will look like you are answering the question

click on "Post a New Question" at the top of this page, then type your problem.
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