Point a lies on the circumference of the unit circle and is in the first quadrant. if the x-coordinate of the point is 0.12, its y-coordinate is .

we are given

Point A lies on the circumference of the unit circle

so, we can write equation of circle as

now, we are given

so, we can plug it in equation and find y

Since, point-A lies in first quadrant

so, both x-value and y-value will be positive

so, we get

.............Answer

Answer

0.99

Explanation

Point A forms a right triangle.

Hypotenuse, c = 1 unit

Base length, x = 0.12 units

Then using the Pythagoras theorem,

y² = c² - x²

y² = 1² - 0.12²

    = 2 - 0.0144

   = 0.9856

y = √0.9856

   = 0.992773891

Answer to the nearest hundredths is 0.99.

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step-by-step explanation:

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