document.write( "Question 632871: I'm trying to use the sum and differences identities to write this expression as a sine, cosine, and tangent of an angle presented in degrees. \r \n" );
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document.write( "I'm trying to completely, and correctly, solve this equation: sin(140)deg cos(5)deg + cos (140)deg sin (50)deg.\r \n" );
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document.write( "So far...I've come up with this solution: sin(140 + 50)= 190 degrees \n" );
document.write( "Because Sin(u+v)= sin(u)cos(v)+cos(u)sin(v)\r \n" );
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document.write( "So...how am I supposed to solve and write the above expression as a sine, cosine, and tangent of an angle?\r \n" );
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document.write( "Thanks! \n" );
document.write( "- Pat \n" );
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