Question

in a fig find the length of the tangent cd if AP=3 and pc = 8cm

Answer 1

AP = PB =3 cm

PC =8 cm
PC =PB +BC
8=3+BC
BC=5
BC=CD
so CD=5cm


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Answer 2

PA=PB-------(tangents from p)-----------(1)

PA=3cm

CB=CD-------(tangents from C)-----------(2)

PC=PB+CB

PC=8cm

8=3+CB

CB=5

from equation 2

CB=CD

CD=5cm