What is unit circle means
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What is unit circle means

[From: ] [author: ] [Date: 12-03-02] [Hit: ]
0),(-1,0). It is used in trigonometry.......
how to find square root of 2?

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The unit circle is a circle centered at the origin (0,0) and has a radius of 1.
The unit circle is used to study trigonometry.

On the unit circle, connecting the 2 points (0,1) and (1,0) will give you the length of sqrt(2).

Finding the square root of 2 for exact numeric value? I know how but can describe here. How about using a calculator?

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A unit circle has a radius that is 1 unit long: r = 1.

Draw a square whose side is of length 1. Draw a diagonal in the square. The diagonal is the hypotenuse of a right triangle whose legs are each of length 1. Now use the Pythagorean relation (a² + b² = c²). a and b are the legs and c is the hypotenuse, so
a² + b² = 1² + 1² = 1 + 1 = 2. This is equal to c², so c = √2.

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a unit circle is a circle with a diameter of 2 with points at (0,1), (0,-1),(1,0),(-1,0). It is used in trigonometry. radius = 1
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