document.write( "Question 207450: find the exact value of tan 15degrees without using tables or a calculator \n" ); document.write( "

Algebra.Com's Answer #156870 by Edwin McCravy(20055) $\"\"$ $\"About$

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Find the exact value of tan(15°) without using tables or a calculator
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document.write( " is not a special angle, however  and \r\n" );
document.write( "are.  And , so we can use this formula:\r\n" );
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document.write( "where  and :\r\n" );
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document.write( "Multiply top and bottom by \r\n" );
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document.write( "Rationalize the denominator:\r\n" );
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document.write( "Check by using your calculator.  \r\n" );
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document.write( "Then find the decimal value for\r\n" );
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document.write( "So it checks.\r\n" );
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document.write( "So the answer is \r\n" );
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document.write( "Edwin

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