document.write( "Question 1021405: I have two angles, 61.8 and 28.2.\r
\n" ); document.write( "\n" ); document.write( "How do I work out the value of SIN and COS for each angle without using a calculator?
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Algebra.Com's Answer #637104 by Alan3354(69443)\"\" \"About 
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I have two angles, 61.8 and 28.2.\r
\n" ); document.write( "\n" ); document.write( "How do I work out the value of SIN and COS for each angle without using a calculator?
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\n" ); document.write( "While it's possible to do it with paper and pencil using a series, it's not practical. It can take hours.
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\n" ); document.write( "Notice that sin(61.8) = cos(28.2) since they're complementary.
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