Search over 10,000 free study notes

cos(30) x tan (60) + sin (30) = (√3)/2 x √3 + 1/2 = 3/2 + 1/2 = 4/2 = 2

Well, basically what you need to do is apply the dot product. It is an easy process.First of all you make An element-wise multiplication of each vector. Let’s say you’ve got vector a and ...

Inversely proportional means proportional to one over, so the first bit tells us y = a/d^2, where a is number we don't know yet that connects y and d. To find it we need some example values of y and d, wh...

To factorise you need to identify 'factors', which are common features, between the different terms in an equation. In 3a^2 - 9a, the first term is 3a^2 and the second term is -9a. One common feature betw...

Equation 1 : y = 2x -3 Equation 2: 2x +3y = 23To solve these equations you use a method called substitution The information from the 1st equation is used by the 2nd one Sub in the formula for y like so: 2...