document.write( "Question 1200010: Evaluate sin(cos^-1(1/2)+cos^-1(1/3))\r
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Algebra.Com's Answer #834010 by ikleyn(52790) $\"\"$ $\"About$

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document.write( "Let a = cos^-1(1/2),  b = cos^-1(1/3)  be the angles, in radians.\r\n" );
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document.write( "Then sin(a) =  = ,\r\n" );
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document.write( "     sin(b) =  = .\r\n" );
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document.write( "The problem asks then about sin(a+b).  It is\r\n" );
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document.write( "    sin(cos^-1(1/2)+cos^-1(1/3)) = sin(a)*cos(b) + cos(a)*sin(b) =  +  = \r\n" );
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document.write( "                                 =  +  =  = 0.76008  (rounded).    ANSWER\r\n" );
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