document.write( "Question 544936: Use the cofunction theorem to fill in the blank so the expression becomes a true statement.
\n" ); document.write( "a) sin pi/6 =cos________ B) cot 1= tan____________
\n" ); document.write( "c) cos90 degrees =sin_____________ D) csc (80 degrees -x)=sec_____________ \n" ); document.write( "

Algebra.Com's Answer #355477 by KMST(5328) $\"\"$ $\"About$

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If the cofunction of an angle is the function of its complement, all you have to do in each case is find the angle that woould add to 90 degrees or $\"pi%2F2\"$ radians.
\n" ); document.write( "a) for $\"pi%2F6\"$ the angle you are looking for is $\"pi%2F2-pi%2F6=pi%2F3\"$ , so
\n" ); document.write( " $\"sin%28pi%2F6%29=cos%28pi%2F3%29\"$
\n" ); document.write( "Those are angles you should be familiar with $\"pi%2F6=30degrees\"$ , $\"pi%2F3=60degrees\"$ , and $\"sin%2830degrees%29=cos%2860degrees%29\"$
\n" ); document.write( "b) cot(1 radian)? or is it cot(1 degree)?
\n" ); document.write( " $\"cot%281+degree%29=tan%2889degrees%29\"$
\n" ); document.write( "if in radians, $\"cot%281%29=tan%28pi%2F2-1%29\"$
\n" ); document.write( "c) cos(90 degrees)=sin(0 degrees)
\n" ); document.write( "d) 90 degrees - (80 degrees -x)= 90 degrees - 80 degrees +x=10 degrees +x
\n" ); document.write( "csc (80 degrees -x)=sec (10 degrees +x) \n" ); document.write( "

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