Search over 10,000 free study notes

The first step in solving any trigonometric equation is to convert everything into sine and cosine functions. So in this case we need to start by converting the tanA. We can use the identity: tanA=sinA/cosA ...

Firstly set 2sinhx+3coshx=5Now using the exponential definitions of sinhx and coshx rewrite the equation to give:2(1/2(e^x-e^-x))+3(1/2(e^x+e^-x))=5Simplify the equation by expanding out the brackets, multip...

Percentage change is often required to utilise figures provided in case studies and present them as evidence, or to use in other calculations. For example: If you were asked to calcuate the percentage change...

This process starts with a slight bend in the river. This causes there to be a faster flow of water on the outside bend and slower water on the inside bend. The faster flow of water on the outside bend resul...

In truth, only your teacher can know due to Oxford's marking system which means that only qualified teachers have access to the marking scheme. However, what they are looking for is a well articulated mind a...