document.write( "Question 961030: Hello,
\n" ); document.write( "Can you please help me solve this problem:
\n" ); document.write( "Give the exact value :
\n" ); document.write( "cos(sin^-1(2/3)+tan^-1(5/6))\r
\n" ); document.write( "\n" ); document.write( "Thank you!
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Algebra.Com's Answer #587373 by rothauserc(4718)\"\" \"About 
You can put this solution on YOUR website!
cos(sin^-1(2/3) + tan^-1(5/6))
\n" ); document.write( "we use the inverse trig function
\n" ); document.write( "sin^-1(2/3) = 41.810314896
\n" ); document.write( "tan^-1(5/6) = 39.805571092
\n" ); document.write( "need to calculate
\n" ); document.write( "cos (41.810314896 + 39.805571092) = 0.145808735
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