Search over 10,000 free study notes

Thinking of sine and cosine as ratios of side lengths in a right angled triangle, sin(x) = o/h and cos(x) = a/h, so the sin(x)^2 + cos(x)^2 becomes (o^2 + a^2)/h^2. By Pyhtagoras, o^2 + a^2 = h^2, so we g...

For this we must take a step back and analyse the meaning of acceleration. Acceleration is a change in VELOCITY - this is very important. Velocity is speed in a particular DIRECTION. You may be confusing ...

History is all about evaluating and critically analysing events and historical happenings. Including historiography in essays is very simple - you only need include an idea and the name of the historian o...

The dopamine hypothesis of schizophrenia states that symptoms may be caused by an excess of dopamine in the mid-brain and a reduction in dopamine in the prefrontal cortex. This hypothesis came from the fi...

There are physical conditions required for the formation of a glacial corrie to take place. For the processes to begin, snow must collect in a naturally occurring hollow on the side of a mountain. The hol...