document.write( "Question 371827: Find all solutions to each equation
\n" ); document.write( "a) cotx +1=0
\n" ); document.write( "b) 2 cosB+1=0 \n" ); document.write( "

Algebra.Com's Answer #264853 by robertb(5830) $\"\"$ $\"About$

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a) cotx = -1, same as tanx = -1, from 0 to $\"2pi\"$ , the only solutions are $\"3pi%2F4\"$ and $\"7pi%2F4\"$ .\r
\n" ); document.write( "\n" ); document.write( "b) The equation is the same as cosB = 1/2. From 0 to $\"2pi\"$ , the only solutions are $\"2pi%2F3\"$ and $\"4pi%2F3\"$ .
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