document.write( "Question 41984: (cos250*cos25) + (sin250*sin25)\r
\n" ); document.write( "\n" ); document.write( "a.k.a. (the cosine of 250 degrees multiplied by the cosine of 25 degrees) plus (the sine of 250 degrees multiplied by the sine of 25 degrees)
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Algebra.Com's Answer #27259 by fractalier(6550)\"\" \"About 
You can put this solution on YOUR website!
cosAcosB + sinAsinB = cos(A-B) so that
\n" ); document.write( "(cos250*cos25) + (sin250*sin25) =
\n" ); document.write( "cos(250-25) = cos(225) = -rad(2) / 2
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