document.write( "Question 1194315: If tan A = ¾ and cos B = 12/13, find
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Algebra.Com's Answer #826596 by MathTherapy(10552) $\"\"$ $\"About$

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If tan A = ¾ and cos B = 12/13, find
\n" ); document.write( "a. Tan (A - B)
\n" ); document.write( "b. c. tan ( B - A )
\n" ); document.write( "c. Sin ( A + B)
\n" ); document.write( "d. cos 2A
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document.write( "This is a 3-4-5 Pythag. Triple,    This is a 5-12-13 Pythag. Triple,\r\n" );
document.write( "      so hypotenuse = H = r = 5    so opposite = O = y = 5   \r\n" );
document.write( "Therefore,     Therefore, \r\n" );
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document.write( "a. \r\n" );
document.write( "    Make the necessary substitutions and you should have the answer.\r\n" );
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document.write( "b. \r\n" );
document.write( "    Make the necessary substitutions and you should have the answer, \r\n" );
document.write( "    or\r\n" );
document.write( "    Simply NEGATE a.\r\n" );
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document.write( "c. sin (A + B) = sin (A) cos (B) + cos (A) sin (B)\r\n" );
document.write( "    Make the necessary substitutions and you should have the answer.\r\n" );
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document.write( "d. \r\n" );
document.write( "    Make the necessary substitutions and you should have the answer.

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