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#1 2014-07-16 16:00:19

David
Member
From: Bumpkinland
Registered: 2014-04-23
Posts: 3,135

Learning Trigonometry

Hi everyone,
What's the best way to learn trigonometry? The basics like sine, cosine and tangent?

I want tips and stuff and how you learnt it.


Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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#2 2014-07-16 16:31:17

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Learning Trigonometry

Hi;

Start with a right triangle.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#3 2014-07-16 23:26:35

Agnishom
Real Member
From: Riemann Sphere
Registered: 2011-01-29
Posts: 24,843
Website

Re: Learning Trigonometry


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.

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#4 2014-07-16 23:48:29

David
Member
From: Bumpkinland
Registered: 2014-04-23
Posts: 3,135

Re: Learning Trigonometry

Is this going to be hard? Lol...


Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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#5 2014-07-16 23:53:12

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Learning Trigonometry

How could it be? You can come in here and ask questions on any part you do not understand.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#6 2014-07-16 23:56:07

David
Member
From: Bumpkinland
Registered: 2014-04-23
Posts: 3,135

Re: Learning Trigonometry

Ok, good. That's what I need.


Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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#7 2014-07-16 23:58:29

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Learning Trigonometry

Well, get started.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#8 2014-07-17 00:16:09

Agnishom
Real Member
From: Riemann Sphere
Registered: 2011-01-29
Posts: 24,843
Website

Re: Learning Trigonometry

chooipian wrote:

Is this going to be hard? Lol...

It is not going to be hard unless you try to prove the stupid and complicated trig identities.

Last edited by Agnishom (2014-07-17 00:16:42)


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.

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#9 2014-07-17 00:35:12

David
Member
From: Bumpkinland
Registered: 2014-04-23
Posts: 3,135

Re: Learning Trigonometry

Thanks for the suggestions guys. Explain radians.


Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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#10 2014-07-17 00:38:39

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Learning Trigonometry


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#11 2014-07-17 00:48:45

David
Member
From: Bumpkinland
Registered: 2014-04-23
Posts: 3,135

Re: Learning Trigonometry

Yes. But I don't understand 1 radian?


Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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#12 2014-07-17 00:48:53

ShivamS
Member
Registered: 2011-02-07
Posts: 3,648

Re: Learning Trigonometry

Precalculus by Sullivan explains everything very well.

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#13 2014-07-17 00:51:41

David
Member
From: Bumpkinland
Registered: 2014-04-23
Posts: 3,135

Re: Learning Trigonometry

But I shouldn't get in there yet?
Precalculus - Concepts throughout functions a unit circle approach to trigonometry.


Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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#14 2014-07-17 00:53:29

David
Member
From: Bumpkinland
Registered: 2014-04-23
Posts: 3,135

Re: Learning Trigonometry

I noticed that I learn better if I don't follow the chapters.


Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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#15 2014-07-17 00:54:11

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Learning Trigonometry

1 radian = 180 / π  degrees

https://en.wikipedia.org/wiki/Radian

Look at the animation, shows what 1 radian is.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#16 2014-07-17 01:02:44

ShivamS
Member
Registered: 2011-02-07
Posts: 3,648

Re: Learning Trigonometry

chooipian wrote:

But I shouldn't get in there yet?
Precalculus - Concepts throughout functions a unit circle approach to trigonometry.

If you are done with algebra (from Sullivan's other book), you can go to Precalculus by Sullivan.

You kind of have to go through the chapters mostly in order.

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#17 2014-07-17 01:07:03

David
Member
From: Bumpkinland
Registered: 2014-04-23
Posts: 3,135

Re: Learning Trigonometry

I'm actually going here and there. My school have timss and I got selected. So I got to learn a lot of stuff.

Last edited by David (2014-07-17 01:14:20)


Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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#18 2014-07-17 01:27:34

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Learning Trigonometry

radian-definition.gif

A radian cuts off an arc length that is equal to the radius of the circle.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#19 2014-07-17 01:58:55

David
Member
From: Bumpkinland
Registered: 2014-04-23
Posts: 3,135

Re: Learning Trigonometry

I got it. Thanks.


Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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#20 2014-07-17 02:00:59

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Learning Trigonometry

We are more familiar with degrees but math likes radians.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#21 2014-07-17 02:03:37

ShivamS
Member
Registered: 2011-02-07
Posts: 3,648

Re: Learning Trigonometry

Maybe try TIMSS next year? Learning this here and there won't help a lot.

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#22 2014-07-17 02:10:48

David
Member
From: Bumpkinland
Registered: 2014-04-23
Posts: 3,135

Re: Learning Trigonometry

I got selected. My school is teaching me, but the way they teach is odd. They will skip here and there.


Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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#23 2014-07-17 02:16:00

David
Member
From: Bumpkinland
Registered: 2014-04-23
Posts: 3,135

Re: Learning Trigonometry

bobbym wrote:

We are more familiar with degrees but math likes radians.

Radians is pure mathematics? I'm learning on how to convert degrees to minute. Before I go, do we necessarily need a calculator for trigonometry?


Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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#24 2014-07-17 02:19:47

ShivamS
Member
Registered: 2011-02-07
Posts: 3,648

Re: Learning Trigonometry

Not necessarily, but in many problems you do.

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#25 2014-07-17 02:25:36

David
Member
From: Bumpkinland
Registered: 2014-04-23
Posts: 3,135

Re: Learning Trigonometry

I just don't like calculators.


Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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