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## #1 2006-05-20 23:58:20

AshJones555
Member
Registered: 2006-05-15
Posts: 19

### trigonometry

I'm currently doing trigonometry at school and i understand simple stuff such as;

where right angle is at the bottom right of trangle and hypotenuse is facing left, y = base and 12
= opposite to hypotonuse (can't seem to upload a picture)

Tan47 = 12/y
y x Tan47 = 12
y = 12/Tan47
y = 11.19018103
y = 11.2 (rounded to 1d.p.)
(please tell me if you work it out otherwise)

I know it's quite vague but is there any way i could extend my trigonometry studies?

Last edited by AshJones555 (2006-05-21 00:13:25)

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## #2 2006-05-22 03:20:03

George,Y
Member
Registered: 2006-03-12
Posts: 1,379

### Re: trigonometry

you can use imageshack and (img)http://.......jpg(/img) "(" and ")" should be "[" and "]" instead.

X'(y-Xβ)=0

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## #3 2006-05-22 11:07:50

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,588

### Re: trigonometry

Yes, you are right!!
The vertical is 12
The horizontal is 12 / tan(47).
Good work.
Tangent is rise over run or slope or first derivative.

igloo myrtilles fourmis

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## #4 2006-05-22 12:13:03

MathsIsFun
Registered: 2005-01-21
Posts: 7,710

### Re: trigonometry

And images can also be uploaded when you click on "Post Reply" - look for the section "Image Upload"

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

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