Questions
The area of the triangle, in square units, formed by the tangents from the point to the circle and the line joining their points of contact, is
a
25192
b
19225
c
38425
d
none of these
detailed solution
Correct option is B
We know that the area ∆ of the triangle formed by the tangent drawn from (x1, y1) to the circle x2+y2=a2 and their chord of contact is given by Δ=ax12+y12−a23/2x12+y12Here, the point is P(4, 3) and the circle is x2+y2=9. ∴ Required area =342+32−93/242+32 sq. units =19225 sq. units.Talk to our academic expert!
Similar Questions
The range of g so that we have always a chord of contact of
tangents drawn from a real point to the circle
is
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