Monday, April 15, 2013

Trig pics

Picture number 1. Doing SOH or Sine
Picture number 2. Doing COH or Cosine
Picture number 3. Doing TOA or Tan





Friday, April 12, 2013

Reflection, rotation, translation, and dilation on geogebra

These pictures show the deference between dilation, translation, rotation, and reflection
1. Reflection of the polygon over the x- axis using the reflection tool and selection the polygon then then the x-axis
2. Reflection of the polygon over a slanted line, this is done the same way as number one but instead you press the polygon the the line that the polygon is being reflected over
3. Rotation of the polygon going counter clockwise 100 degrees using the rotation tool then selecting the polygon then the rotation point then the amount of rotation (100 degrees)
4. Rotation of the polygon going clockwise 100 degrees, this is done the same way as number number 3, but instead of choosing counterclockwise you will choose clockwise
5. Translation using a ray and the translation button located in the same drop down as rotation and reflection
6. Dilation of the polygon using the dilation button located in the same drop down as treflection and rotation, and using the amount you want to dilate the polygon by.











Friday, February 1, 2013

How to make a circle

Use the expression on e second picture, and use the (x)squared and where you want re center of the circle on the x axis. Then use the (y)squared as we're you want the middle of the circle on the y axis. So for example in the second picture the middle of the circle is on point (2,2) and use the part after the = sign as Ohio far you want the circle to expand in all directions.