[" construct the pair of tangent to the ...

[" construct the pair of tangent to the circle and measure their length."],[[" Q.36"," A "],[qquad /90]],[" n given fig."b," c "/_BAC=900" ,AD is its bisector."],[" DE "perp AC" ,prove that DE "times(AB+AC)=AB times AC" ."],[" OR "]

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