document.write( "Question 968430: What is the exact value of arccos(cos(3π/2) ) \n" ); document.write( "

Algebra.Com's Answer #854545 by ikleyn(53875) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( " The answer \"3pi/2\" in the post by @lwsshak3 is INCORRECT.\r
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document.write( "This problem is a simple elementary  ,  and @lwsshak3 fell in this trap.\r\n" );
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document.write( "To answer correctly, you should remember that function arccos has values in interval  [,].\r\n" );
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document.write( "Therefore, you should transform    to the equivalent angle in interval  [,].\r\n" );
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document.write( "This equivalent angle is  ,  so the correct answer to the problem's question is  .\r\n" );
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\n" ); document.write( "\n" ); document.write( " Solved correctly, while the \"solution\" by @lwsshak3 is disproved.\r
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