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The distance between the centres, of two equal circles each of radius 4 cm is 17 cm. The length of a transverse tangent is:
Answer & Solution
Correct Answer:
Option
A
Let the length of a transverse tangent = x
$$\eqalign{ & = \sqrt {{a^2} - {{\left( {{r_1} + {r_2}} \right)}^2}} \cr & = \sqrt {289 - 64} \cr & = \sqrt {225} \cr & = 15{\text{ cm}} \cr} $$
$$\eqalign{ & = \sqrt {{a^2} - {{\left( {{r_1} + {r_2}} \right)}^2}} \cr & = \sqrt {289 - 64} \cr & = \sqrt {225} \cr & = 15{\text{ cm}} \cr} $$
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