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OpenStudy (unbelievabledreams):
Solve the equation for an exact solution. I don't know how to solve it.
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OpenStudy (anonymous):
what is 2arcsin(1/2)?
OpenStudy (unbelievabledreams):
pi / 3
OpenStudy (anonymous):
arccosx=pi/3+pi/2 by adding to both sides arccosx=5pi/6 by adding pi/3 + pi/2
OpenStudy (anonymous):
know how to get x?
OpenStudy (anonymous):
Hint: 5pi/6 is 150 degrees and it is at 2nd quadrant making it negative.
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OpenStudy (unbelievabledreams):
Is it sqrt(11)/ 5pi ?
OpenStudy (anonymous):
No. arccosx=5pi/6 is cos(5pi/6)=? It should not have a pi value!
OpenStudy (unbelievabledreams):
- sqrt(3) / 2
OpenStudy (anonymous):
Yes, that is correct!
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