document.write( "Question 1155360: Please help me answer this question:\r
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Algebra.Com's Answer #777938 by ikleyn(52803) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "The key to the solution is this identity  tan(x) = .\r\n" );
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document.write( "It gives\r\n" );
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document.write( "    tan(6°)*tan(84°) = 1\r\n" );
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document.write( "    tan(12°)*tan(78°) = 1\r\n" );
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document.write( "    tan(18)*tan(72°) = 1\r\n" );
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document.write( "    . . . and so on . . . \r\n" );
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document.write( "    tan(42°)*tan(48°) = 1.\r\n" );
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document.write( "By multiplying all these identities, you will get finally\r\n" );
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document.write( "    tan(6°)*(tan(12°)*tan(18°)* . . . *tan(84°) = 1.\r\n" );
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document.write( "ANSWER.  This product is equal to 1.\r\n" );
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