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You use the cosine rule when you have been given the length of two sides and an inclusive angle (the angle in between those two lines) or if you have been given the length of three sides.You use the sine ...

The funtion of the heart is to supply the body with oxygenated blood. In humans this is done by use of a double circulatory system. This means that the blood enters the heart twice before it is pumped to ...

In French as well as Spanish and a few other languages, we have 2 different ways of addressing people: using the "tu" or the "vous".When talking to a friend, someone we know quite well...

Step 1: Difference between each term is 3. As the difference is constant it means that the degree of n in the nth term formula must be 1 (i.e no n^2, n^3 etc.). As we are adding 3 to each successive term ...

'Ser' is used to describe the permanent state of something, aka what something is. These are qualities which aren't going to change any time soon, and are the qualities which define a person or obj...