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The slope of the tangent at the point (h,h) of the circle   \mathrm{\mathrm{x}^2+\mathrm{y}^2=\mathrm{a}^2}  is-

Option: 1

0


Option: 2

1


Option: 3

-1


Option: 4

depend on h


Answers (1)

best_answer

The equation of tangent at (h,h) to  \mathrm{\mathrm{x}^2+\mathrm{y}^2=\mathrm{a}^2 \text { is } \mathrm{hx}+\mathrm{hy}=\mathrm{a}^2}.

Therefore slope of the tangent = -h/h=-1

Hence (c) is correct answer.

Posted by

rishi.raj

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