An excellent answer Sasini.
It is used in trigonometry.
If you are interestested here is a you tube clip
Introduction to Trigonometry
Differentiate means
Find the equation that will give the gradient of the tangent to the curve at any given point.
Interesting question and great pic Chris
0.15*35 pounds
multiply by 100 and put a percent sign
3=300%
5x+10y=220
post again with brackets please - your question is not clear.
110/3000*100 percent
that depends on the question :)
+118735 
