document.write( "Question 214091: Find the exact value of tan210 degree \n" ); document.write( "
Algebra.Com's Answer #161703 by drj(1380)\"\" \"About 
You can put this solution on YOUR website!
Find the exact value of tan 210 degree\r
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\n" ); document.write( "\n" ); document.write( "Step 1. The angle 210 degrees will fall in the third quadrant. This means that the x-coordinate is negative and the y-coordinate is negative. Also you can calculate using the 30-60-90 triangle since 210-180=30 degrees. You will need to draw a graph to see this more clearly.\r
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\n" ); document.write( "\n" ); document.write( "Step 2. So x-coordinate will be \"cos%2830%29=-%28sqrt%283%29%2F2%29\" and y-coordinate is \"sin%2830%29=-%281%2F2%29\"\r
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\n" ); document.write( "\n" ); document.write( "Step 3. Then we have\r
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\n" ); document.write( "\n" ); document.write( "\"tan%28210%29=sin%2830%29%2Fcos%2830%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"tan%28210%29=%28-1%2F2%29%2F%28-sqrt%283%29%2F2%29=1%2Fsqrt%283%29\"\r
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\n" ); document.write( "\n" ); document.write( "Step 4. Answer is \"tan%28210%29=1%2Fsqrt%283%29\"\r
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\n" ); document.write( "\n" ); document.write( "I hope the above steps were helpful. \r
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\n" ); document.write( "\n" ); document.write( "For free Step-By-Step Videos on Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra or for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.\r
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\n" ); document.write( "\n" ); document.write( "And good luck in your studies!\r
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\n" ); document.write( "\n" ); document.write( "Respectfully,
\n" ); document.write( "Dr J\r
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