document.write( "Question 1157805: Express cos241 as a function of a positive acute angle.
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Algebra.Com's Answer #780666 by Shin123(626) $\"\"$ $\"About$

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First, using the fact that $\"cos%28180%5Eo-theta%29=-cos%28theta%29\"$ , plugging in 241^o for theta gives $\"cos%28-61%5Eo%29=-cos%28241%5Eo%29\"$ . Next, using the identity $\"cos%28-theta%29=cos%28theta%29\"$ gives $\"cos%2861%5Eo%29=-cos%28241%5Eo%29\"$ . Dividing by -1 gives $\"highlight%28cos%28241%5Eo%29=-cos%2861%5Eo%29%29\"$ . \n" ); document.write( "

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