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Where'sPerry?
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Hi,
I'm doing some M2 revision and I'm quite stuck on exercise 5D, question 12. I have Solutionbank open as I write this and I think I understand their written method but I cannot see how they know that all of the following angles in the diagram are equal to phi. I believe they have used phi to represent theta (as theta was used to represent the desired angle in the question)

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Name:  question2.png
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This is probably going to be very obvious when it's pointed out to me but I just cannot see it

Thanks very much for any help.
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ghostwalker
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(Original post by Where'sPerry?)
Thanks very much for any help.
I can't see how the angle ABC relates to the other marked angles.

Is there more to the solution, or is that it?
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Where'sPerry?
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(Original post by ghostwalker)
I can't see how the angle ABC relates to the other marked angles.

Is there more to the solution, or is that it?
There is more, sorry, I just wanted to get the diagram in. Here's the rest. The red line is where it carries on from the previous screenshot

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ghostwalker
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(Original post by Where'sPerry?)
There is more, sorry, I just wanted to get the diagram in. Here's the rest. The red line is where it carries on from the previous screenshot
I think it's the case that angle ABC should be labelled theta, and all the others labelled phi remain as they are.

So, misprint on diagram.
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Where'sPerry?
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(Original post by ghostwalker)
I think it's the case that angle ABC should be labelled theta, and all the others labelled phi remain as they are.

So, misprint on diagram.
Thanks very much, I was getting so frustrated with this. The answers in the back of this book are horrendous, my teacher actually has a sheet of corrections for it. I shouldn't trust it so much thanks again, I can get on with the question now.

Mods can close the thread if appropriate.
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cheesedrew
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#6
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how get 3/2L pls help
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Zacken
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(Original post by cheesedrew)
how get 3/2L pls help
Please create a new thread if you need help, this is from 2013 (!).
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