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Rom4ik [11]
3 years ago
6

The line / is tangent to the circle x^2+y^2=50 at the point A.

Mathematics
1 answer:
stiks02 [169]3 years ago
4 0

Answer:

175 sq units

Step-by-step explanation:

The equation of the circle is

x^2+y^2 = 50

Tangent at point (1,7) will have slope equal to its derivative value

Differentiate to get

2x+2yy1 = 0\\y1 = \frac{-x}{y} =\frac{-1}{7}

Using point slope formula

y-7 = \frac{-1}{7} (x-1)\\y =  \frac{-1}{7}x+ \frac{50}{7}

this line cuts x axis at (50,0) P

The triangle OAP has vertices equal to (0,0) (1,7) and (50,0)

The triangle has base as OP = 50 units

Height = distance of A from x axis = 7

Area = \frac{1}{2} bh\\= 175 sq units

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