document.write( "Question 1197992: Which value of X is NOT in the domain of f(X)=tan X. Choose one of the following:
\n" ); document.write( "A. X=0
\n" ); document.write( "B. 11pi/4
\n" ); document.write( "C. 7pi/3
\n" ); document.write( "D. 5pi/2
\n" ); document.write( "E. 4pi
\n" ); document.write( "

Algebra.Com's Answer #831479 by ewatrrr(24785)\"\" \"About 
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Which value of X is NOT in the domain of f(X)=tan X\r
\n" ); document.write( "\n" ); document.write( "Note: tan(x) = sin(x)/cos(x)
\n" ); document.write( "CANNOT Divide by zero.
\n" ); document.write( "A. X=0
\n" ); document.write( "B. 11pi/4
\n" ); document.write( "C. 7pi/3
\n" ); document.write( "D. 5pi/2 cos(5pi/2) = 0
\n" ); document.write( "E. 4pi
\n" ); document.write( "5pi/2 is NOT in the domain of f(X)=tan X
\n" ); document.write( "
\n" );