Question

Solve the above problem ...
JEE✌✌​

Answer 1

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Above ur solutions

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Answer 2

Answer:

⚡⚡⚡ Hola ⚡⚡⚡

If a circle touches X-axis.

then it will lie in the XY plane and will be perpendicular to the Y-axis .

So , it's y coordinates becomes radius

We know,

Coordinate of y is -f

.°. r = √(g² + f² - c)

=> |-f| = √(g² + f² - c)

By squaring on both sides

=> f² = g² + f² - c

=> g² - c = 0

=> g² = c

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-----------------------Hence proved--------------------

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