document.write( "Question 615273: DID NOT RECEIVE ENOUGH INSTRUCTION TO ANSWER THIS QUESTION. USE THE PERIODIC PROPERTIES TO FIND THE EXACT VALUES OF COT (7PI/4). \n" ); document.write( "

Algebra.Com's Answer #387043 by josmiceli(19441) $\"\"$ $\"About$

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If you start at 0 radians and rotate the radius 8 times by $\"+pi%2F4+\"$ , which is 45 degrees,
\n" ); document.write( "you end up back at 0 radians, since $\"+8%2A%28pi%2F4%29+=+2%2Api+\"$
\n" ); document.write( "Now back off $\"+pi%2F4+\"$ radians in the CW direction, and you have $\"+7%2Api%2F4+\"$
\n" ); document.write( "The cotangent is adjacent side / radius which is positive in the 4th quadrant.
\n" ); document.write( "So, $\"+cot%28+7%2Api%2F4+%29+=+sqrt%282%29+%2F+2+\"$
\n" ); document.write( "The rule is just keep adding or subtracting $\"+2%2Api+\"$ radians, and you will
\n" ); document.write( "end up back where you started \n" ); document.write( "

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