document.write( "Question 602114: the expression tan(-220) is equivalent to?
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document.write( "a) tan 50
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document.write( "b) -tan 50
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document.write( "c) -tan 40 \n" );
document.write( "
Algebra.Com's Answer #380126 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! the expression tan(-220) is equivalent to? \n" ); document.write( "---- \n" ); document.write( "-220 = +140 is in Q2 where the tangent is negative \n" ); document.write( "------------------------------ \n" ); document.write( "The reference angle for -220 is 40 degrees \n" ); document.write( "---- \n" ); document.write( "t(-220) = -tan(40) \n" ); document.write( "a) tan 50 \n" ); document.write( "b) -tan 50 \n" ); document.write( "c) -tan 40 \n" ); document.write( "================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |