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**Mahamaya****Member**- Registered: 2009-11-21
- Posts: 6

I dropped out of school sometime ago but am back. To make things worse my math teacher is making things difficult for me. He hardly takes his time to explain math concept and formulas.

The problem am having in trig at the moment is where do i start from to prove things like this:

*Last edited by Mahamaya (2009-12-19 23:29:42)*

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,664

Maybe just use the math tag for the formulas?

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**soroban****Member**- Registered: 2007-03-09
- Posts: 452

. . .

. .

.

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**Sarah Rebekah 13****Guest**

Sometime you have crazy Teachers.

**Monox D. I-Fly****Member**- Registered: 2015-12-02
- Posts: 858

Mahamaya wrote:

Secondly in the following formula

why did we divide through by and not or ?

Well, you *can* divide it by

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