document.write( "Question 91486: Find all the solutions to the equation cosx = -1.
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Algebra.Com's Answer #66435 by Nate(3500) $\"\"$ $\"About$

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cos(x) = -1
\n" ); document.write( "On the cycle [- $\"pi\"$ , $\"pi\"$ ], cos(x) = -1 occurs when x = - $\"pi\"$ or $\"pi\"$ . The period of cos(x) is 2 $\"pi\"$ .
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\n" ); document.write( "- $\"pi\"$ +- 2 $\"pi\"$ k ~> $\"pi\"$ +- 2 $\"pi\"$ k
\n" ); document.write( " $\"pi\"$ +- 2 $\"pi\"$ k
\n" ); document.write( "Answer:
\n" ); document.write( " $\"pi\"$ +- 2 $\"pi\"$ k
\n" ); document.write( "Where k is any integer...
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