find the equation of the tangents to the circle x square+ y square= 25 drawn from the point (7,1)
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Hiiii.....
Here is the answer ....
General eqn of tangent to circle...
y = mx +/- a ( 1 + m^2 )^0.5
Here a = 5 a radius ...
It passes through ( 7, 1 ) ...
1 = 7m +/- 5 ( 1 + m^2 )^0.5
Answer is option a as from eqn ...
m = -3 /4 & m = 4 / 3.....
Here is the answer ....
General eqn of tangent to circle...
y = mx +/- a ( 1 + m^2 )^0.5
Here a = 5 a radius ...
It passes through ( 7, 1 ) ...
1 = 7m +/- 5 ( 1 + m^2 )^0.5
Answer is option a as from eqn ...
m = -3 /4 & m = 4 / 3.....
HimanshuRai1:
Thnks frd
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my answer ...
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