document.write( "Question 1104528: Cot (cos-1(4/7)) \n" ); document.write( "

Algebra.Com's Answer #720143 by Fombitz(32388) $\"\"$ $\"About$

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\n" ); document.write( " $\"4%5E2%2BY%5E2=7%5E2\"$
\n" ); document.write( " $\"Y%5E2=49-16\"$
\n" ); document.write( " $\"Y%5E2=33\"$
\n" ); document.write( " $\"Y=sqrt%2833%29\"$
\n" ); document.write( "So,
\n" ); document.write( " $\"cot%28cos%5E%28-1%29%284%2F7%29%29=4%2Fsqrt%2833%29=%284%2F33%29sqrt%2833%29\"$
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