Unit Circle

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Hi, i got a little behind in math and we are learning about The Unit Circle and Reference Angles, i just need a little explanation please!

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Can you show me an example?? Cause im really lost

Guest May 15, 2014

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Best Answer

Maybe this site will help

Remember, with the unit circle cos x is given by the x value and sinx is given by the y value - this is because the hypotenuse is 1 at all times.

Look at the interactive picture and see if you can comprehend what I am tlaking about and why it it so!

If you understand the unit circle properly it will make much of trig a lot easier to understand and remember.

Melody May 16, 2014

Melody · Answer 1 · 2014-05-16T06:01:25

Maybe this site will help

Remember, with the unit circle cos x is given by the x value and sinx is given by the y value - this is because the hypotenuse is 1 at all times.

Look at the interactive picture and see if you can comprehend what I am tlaking about and why it it so!

If you understand the unit circle properly it will make much of trig a lot easier to understand and remember.

zegroes · Answer 2 · 2014-05-15T07:15:46

Understanding the unit circles and reference angles steps below

First you Find the exact trigonometric function values for angles that measure 30°, 45°, and 60° using the unit circle.
Then you Find the exact trigonometric function values of any angle whose reference angle measures 30°, 45°, or 60°.
Lastly Determine the quadrants where sine, cosine, and tangent are positive and negative.