document.write( "Question 1133264: In a triangle PQR, p=5cm, q=7cm and angle PRQ=60 degree. Find the value of r, correct to 2 decimal places \n" ); document.write( "

Algebra.Com's Answer #750438 by ikleyn(52800) $\"\"$ $\"About$

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document.write( "Use the Law of cosine\r\n" );
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document.write( "r =  =  = 6.24 (correct to 2 decimal places.)\r\n" );
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