C is a point outside a crcle with centre A and radius r.

CB and CD are tangents whose length is t

find area of tri.BCD in terms of r and t

Dear ajinkya

cosx =r/√r²+t²

sinx =t/√r²+t²

AE =rcosx

BE =rsinx

area BDC =2 ΔBCE =2(ΔABC -ΔABE)

                            =2(rt/2  - 1/2 AE BE)

                           =rt³/(r²+t²)

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