document.write( "Question 1002021: sin(-40)/cos(50) \n" ); document.write( "
Algebra.Com's Answer #619037 by ikleyn(52798)\"\" \"About 
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\n" ); document.write( "Notice that  sin(40°) = cos(50°),\r
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\n" ); document.write( "\n" ); document.write( "because  40° + 50° = 90°.\r
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\n" ); document.write( "\n" ); document.write( "Next,  sin(-40°) = - sin(40°).\r
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\n" ); document.write( "\n" ); document.write( "Hence,   \"sin%28-40%5Eo%29%2Fcos%2850%5Eo%29\" = -1.\r
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\n" ); document.write( "\n" ); document.write( "Congrats!\r
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