document.write( "Question 803454: what angles in between pi and 2pi satisfy the equation cos(4x)=0 \n" ); document.write( "

Algebra.Com's Answer #484357 by Edwin McCravy(20064) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "cos(4x)=0\r\n" );
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document.write( "The angles with cosine 0 are all the odd multiples of \r\n" );
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document.write( "4x = \r\n" );
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document.write( " x = ÷4\r\n" );
document.write( " x = \r\n" );
document.write( " x =  \r\n" );
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document.write( "Divide all three sides by p\r\n" );
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document.write( "Multiply all three sides by 8 to clear of fractions:\r\n" );
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document.write( "Subtract 1 from all three sides\r\n" );
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document.write( "Divide all three sides by 2\r\n" );
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document.write( "Since n is an integer\r\n" );
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document.write( "  , \r\n" );
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document.write( "  n ∈ {4,5,6,7}\r\n" );
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document.write( "Answers:  x =  =  =  \r\n" );
document.write( "          x =  =  =  \r\n" );
document.write( "          x =  =  =  \r\n" );
document.write( "          x =  =  =  \r\n" );
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document.write( "Edwin

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