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4 cos² (x) + 7sin (x) – 7 = 0      (1)

Using the identity sin² (x) + cos² (x) = 1,

rearrange to give; cos² (x) =...

- When gas is heated, the molecules gain kinetic energy. 

• This causes more collisions of greater force per unit time with the wall of the container. 
  
• If the pressure i...

This is an example of circular motion caused by a centripetal force. In this case, the centripetal force is the gravitational force between the Earth and the object. Linking the equations for circular ...

Primary - The sequence of amino acids in the Protein, defined by the DNA sequence coding for the protein. 

Secondary - Any folding or coiling within the protein which are stabilised by hy...

It is first important to get the equation to equal 0, so to do this you minus 12 from each side of the equals symbol, giving youX^2 +13X+36=0Now it is time to think about factorising!The best trick for th...