Search over 10,000 free study notes

Pythagoras was a Greek philosopher who discovered that in a right angled triangle (triangle with one angle 90 degrees) the hypotenuse squared , c², ...

Here is a genuine probability question I once tackled:

“In your sock drawer there are 6 blue socks, 2 red socks and 2 white socks, distributed so that the probability of ...

Normal manipulation of inequalities does not affect the direction of the inequality such as:
addition
subtraction
multiplication or division by a positive number, 

Both the sine and the consine rule applies to any triangle, you do not necessary need a right angle! 

You can usually use the cosine rule when you are given two sides and the included ang...