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  • Find the equation to the tangent of circle  at the point (2, 1)

Find the equation to the tangent of circle x^2+y^2=5 at the point (2, 1)

Option: 1

2x+y=5


Option: 2

x+2y=5


Option: 3

x-2y=5


Option: 4

2x-y=5


Answers (1)

best_answer

 At the point (x,y) 

equation of tangent is  is xx_1 + yy_1 = a^2

Thus ,we get 2x + y = 5

Posted by

Pankaj

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