Tuesday, July 20, 2010

Learning Pythagorean Identities


Let us learn about Pythagorean Identities
In a unit circle, the study shows that a point on the unit circle (the vertex of the right triangle) can be represented by the coordinates (cos Θ, sin Θ).


Since the bases of a right triangle in the unit circle have the values of sinΘ and cosΘ, the Pythagorean Theorem can be used to obtain, also get information on pythagorean theorem word problems


sin2Θ + cos2Θ = 1


This equation is called as Pythagorean identity. Here the value of theta in immaterial.
please find more detailed information about pythagoras theorem proof


Wednesday, July 14, 2010

Learn Fractions





The below content will explain you
How to do fractions.





The simple procedure to perform fraction.
To divide given whole object into specified number of equal parts is called as fraction.
Following example illustrate how to do fractions and basic operations involved during fractions.
Example : fraction of 12 objects into 7 equal parts = 12/7
Verification - 1 object and 1/7th part of another objects when added 7 times gives apprximately 12 objects
fraction of 18 objects into 3 equal parts = 18/3
Verification - 6 object added 3 times gives 18 object.
Let us know about adding fractions

To add two fractions with the same denominator, add the numerators and place that sum over the common denominator.