document.write( "Question 1012334: Could you please help me with the following problem,
\n" ); document.write( "Use a right triangle to write the following expression as an algebraic expression. Assume that x is positive and in the given inverse trigonometric function
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Algebra.Com's Answer #628225 by ikleyn(52800) $\"\"$ $\"About$

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\n" ); document.write( "Use a right triangle to write the following expression as an algebraic expression.
\n" ); document.write( "Assume that x is positive and in the given inverse trigonometric function tan(arccos 2x)
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document.write( "Let  = arccos(2x).\r\n" );
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document.write( "It means that  = 2x and  lies in the 1st or in the 2nd quadrant.\r\n" );
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document.write( "We need to express  via x.\r\n" );
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document.write( "Since  = 2x,  =  = .\r\n" );
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document.write( "Therefore,  =  = .\r\n" );
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document.write( "Answer.  = .\r\n" );
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\n" ); document.write( "\n" ); document.write( "Your formulation is not perfect.
\n" ); document.write( "The right formulation is \r
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\n" ); document.write( "\n" ); document.write( "\"Find $\"tan%28alpha%29\"$ if $\"arccos%28alpha%29\"$ = 2x.\"\r
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