document.write( "Question 957815: PQ, PR and QR are tangents to a circle at point S, U and T respectively. Given that PQ=20cm, PR=18cm and QR=16cm, calculate the length of PS, QT and RU(P, Q and R form a triangle)\r
\n" ); document.write( "\n" ); document.write( "I tried to use (sin cos tan), but then i realised it wasn't right angled triangle, but the answer shown in my book is
\n" ); document.write( "PS=11
\n" ); document.write( "QT=9
\n" ); document.write( "RU=7\r
\n" ); document.write( "\n" ); document.write( "i tried drawing the whole diagram on paper but still cant find the answer. But the weird thing is, the book doesnt show ways to calculate this kind of question. And this is a maths question, but both my maths and add maths teachers doesnt know how to do it(they are good teachers).\r
\n" ); document.write( "\n" ); document.write( "I hope that u guys can help me with this question. Ty in advance~
\n" ); document.write( "

Algebra.Com's Answer #585356 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
Google inscribed circle.
\n" ); document.write( "email via the TY note with any questions.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );