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**niharika_kumar****Member**- From: Numeraland
- Registered: 2013-02-12
- Posts: 995

prove that

I am not able to break into 1.

pls help

friendship is tan 90°.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 85,338

Hi;

That is because it does not equal 1. Think you meant to write 55°

**In mathematics, you don't understand things. You just get used to them.Of course that result can be rigorously obtained, but who cares?Combinatorics is Algebra and Algebra is Combinatorics.**

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**niharika_kumar****Member**- From: Numeraland
- Registered: 2013-02-12
- Posts: 995

In book it is given what I wrote above.

So now it is clear that the question is wrong.

thanks.

friendship is tan 90°.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 85,338

Hi;

It is definitely wrong.

**In mathematics, you don't understand things. You just get used to them.Of course that result can be rigorously obtained, but who cares?Combinatorics is Algebra and Algebra is Combinatorics.**

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