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#1 2009-12-19 21:06:02

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

Trig is driving me crazy

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:

? Secondly in the following formula
why did we divide through by
and not
or
?dunno

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

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#2 2009-12-19 22:54:23

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

Re: Trig is driving me crazy

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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#3 2009-12-20 05:15:30

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

Re: Trig is driving me crazy

. . .




. .

.

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#4 2009-12-24 07:12:11

Sarah Rebekah 13
Guest

Re: Trig is driving me crazy

Sometime you have crazy Teachers.

#5 2017-09-19 17:21:06

Monox D. I-Fly
Member
Registered: 2015-12-02
Posts: 857

Re: Trig is driving me crazy

Mahamaya wrote:

Secondly in the following formula

why did we divide through by
and not
or
?dunno

Well, you can divide it by

or
. By dividing it with
, you get
. By dividing it with
, you get
. Both are other trigonometry identities. However, we are encouraged to divide it by
to get
which consists of two most basic trigonometry as a result.

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