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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...