document.write( "Question 1176723: Angles A and B are acute angles such that tanA + tanB + (tanA)(tanB) = 1 . If A-B = 41 degrees, find the measure of angle A. \n" ); document.write( "
Algebra.Com's Answer #804171 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "A student fairly early in his study of trigonometry should recognize the terms in this equation as those in the formula for tangent of the sum of two angles:

\n" ); document.write( "\"tan%28A%2BB%29+=+%28tan%28A%29%2Btan%28B%29%29%2F%281-tan%28A%29%2Atan%28B%29%29\"

\n" ); document.write( "Manipulate the given equation to put it in that form:

\n" ); document.write( "\"tan%28A%29%2Btan%28B%29%2Btan%28A%29%2Atan%28B%29+=+1\"
\n" ); document.write( "\"tan%28A%29%2Btan%28B%29+=+1-tan%28A%29%2Atan%28B%29\"
\n" ); document.write( "\"%28tan%28A%29%2Btan%28B%29%29%2F%281-tan%28A%29%2Atan%28B%29%29+=+1\"
\n" ); document.write( "\"tan%28A%2BB%29+=+1\"

\n" ); document.write( "Since the tangent of 45 degrees is 1, this tells us A+B=45.

\n" ); document.write( "But that together with the given that A-B=41 allows us to solve that pair of equations to find the measure of angle A.

\n" ); document.write( "I leave that last little bit for you....

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