document.write( "Question 1169558: This problem refers to triangle ABC.\r
\n" ); document.write( "\n" ); document.write( "If a = 40 cm, b = 12 cm, and c = 34 cm, find the largest angle. (Round your answer to the nearest whole number.)\r
\n" ); document.write( "\n" ); document.write( "I've only got 33 so far which was incorrect. \n" ); document.write( "

Algebra.Com's Answer #794321 by ikleyn(52800) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "The largest angle is opposite to the longest side.\r\n" );
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document.write( "By knowing is, we now can apply the cosine law to find cos(A), where A is the opposite angle to the side a= 40 cm\r\n" );
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document.write( "    a^2 = b^ + c^2 - 2bc*cos(A),\r\n" );
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document.write( "which implies\r\n" );
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document.write( "    cos(A) =  = -0.36765 = 1.9472 radians = 111.63 degrees.    ANSWER\r\n" );
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