Geometry Help-Circles-Tangent and Radius-MooMooMath

MooMooMath provides helpful Geometry videos. In this video tangent and radius of a circle is covered.When you combine the radius of a circle, along with the point of tangency, a right triangle can be created. The Pythagorean Theorem can be used to calculate missing parts of the triangle and circle, along with the tangent lengths. These measurements include leg length,circle radius, and the hypotenuse.

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Video of the Day " Trigonometry Unit"

If you need help in trigonometry I have put together a trigonometry unit. This is one video of the trigonometric unit that contains 14 videos, along with a note taking guide for each video, Click here for the table of contents: Trig Unit

Video Guide
0:30 Definition of the trig ratios
2:42 Learning how to use the trig functions
Reviewing the steps
1.  Find the reference angle.
2. Label OPPOSITE, ADJACENT, HYPOTENUSE
3. Which two do you have?  Which function is it?
4. Set up the ratio
5. Solve it!
5:11 Practice problem 1 Deciding the functions
6:30 Practice 2 Find opposite side using tangent
7:45 Practice problem 3 Using cosine
9:53 Solving Tan 52/1 = x/12
12:33 Solving Sin 48/1=x/17
13:39 Solving Tan72/1 = x/34
15:03 Solving Cosine 25/1  = 7/x
17:22 Reviewing using trig functions