Hi everyone :) I just had a question about this problem that I will show you in a bit. I have tried at least a few methods and I am still unable to get it right. I am understanding a few things about it, but I don't think it is enough. Many thanks in advanced!

Question

anonymous · Answer

attachment

festinger · Answer

I am guessing the question wants you to express the answer with the horizontal line as reference, not the more easily obtainable angle from the normal.

anonymous · Answer

That is correct. Below the horizontal really. I just don't understand what i'm doing wrong...

festinger · Answer

can you show what you have done?

anonymous · Answer

hang on i'll try to make a somewhat "simple" sketch

anonymous · Answer

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