document.write( "Question 148267: Cos 30 degrees = Sin ??? degrees \n" ); document.write( "
Algebra.Com's Answer #108669 by mangopeeler07(462)\"\" \"About 
You can put this solution on YOUR website!
cos (x)=sin(90-x)\r
\n" ); document.write( "\n" ); document.write( "cos (30)=sin (90-30)\r
\n" ); document.write( "\n" ); document.write( "cos (30)=sin (60)\r
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\n" ); document.write( "\n" ); document.write( "Why?
\n" ); document.write( "Because cos is adjacent over hypotenuse
\n" ); document.write( "and sin is opposite over hypotenuse\r
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\n" ); document.write( "\n" ); document.write( "If you draw a 30, 60, 90 degree triangle, the adjacent for 30 becomes the opposite for 60. So the cos of 30 would be the sin of 60. So it is the same ratio by a different name.
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