document.write( "Question 577631: What's the Exact Value for Sin 13π/12 degrees ? Without using a calculator
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Algebra.Com's Answer #370420 by KMST(5328)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "We calculate by reference to angles in the first quadrant whose terminal sides are reflections on the axes or the origin, and whose trigonometric functions have the same absolute value. \n" ); document.write( "The two angles differ by \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "The only angles in the first quadrant whose trigonometric function values I remember are \n" ); document.write( "For any other angles, I need those trigonometric identity formulas. \n" ); document.write( "I search for them, and find \n" ); document.write( " \n" ); document.write( "I know that \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "(If there is a way to make it look prettier than that, I do not know it.) \n" ); document.write( "So |