Question: Answer: My Problem: I don't understand what they have done in the mark scheme where I have put a red box around the part that I don't understand. Please help. Thanks in advance.
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They are using a standard result, The center of mass of a uniform solid right circular cone is distance from the base (where h is the height of it.) Bobak
I attached the formula you will be given in your M3 exam if your interested in it. Bobak
...And what did they do to get ? What rule is it that says external angle equals that of the internal?
Originally Posted by Air ...And what did they do to get ? What rule is it that says external angle equals that of the internal? the tangent is just a given, they didn't work it out they defined it to make working out the height a bit more interesting. Bobak
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