document.write( "Question 1135389: what is the refernece angle and the exact function value of cot 855 degrees \n" ); document.write( "
Algebra.Com's Answer #752992 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "\"855=2%2A360%2B135\"=>\"cot+%28855%29=cot+%28135%29\"\r
\n" ); document.write( "\n" ); document.write( "the exact function value:\r
\n" ); document.write( "\n" ); document.write( "\"cot+%28135%29=-1\"
\n" ); document.write( "=>\"cot+%28855%29=-1\"\r
\n" ); document.write( "\n" ); document.write( "Reference angle is the smallest angle that the terminal side of a given angle makes with the x-axis.\r
\n" ); document.write( "\n" ); document.write( "will be in II quadrant, so \"180-135=45\"°
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