right angle math question

[jgr]

adosorken

40*sin(30) is not equal to 1/2(40)

and

40*sin(60) is not equal to 1/2(40)sqr(3)

[adosorken]

adosorken

40*sin(30) is not equal to 1/2(40)

and

40*sin(60) is not equal to 1/2(40)sqr(3)

I wasn't referring to nathan, I was referring to tiger. And the forumla I presented is correct for a 30-60-90 triangle...it has its own name in trigonometry, remember?

Btw...nice double post.

[Rhiannon]

It won't always be a 30,60,90 though. That was just an example.

then say it was an example and you want the formulas for all the right triangles. And you can find this on google easily :roll:

[jgr]

Thanks for the help, but one more question.

To use sin,cos...ect in qb the angle must be in radians and not degree's as on most calculators. Is there a pi function?? I know to convert you use degree*(pi/180). Or is there another way of doing this? I looked in the help section but could not find anything.

[whitetiger0990]

just use 3.14 =\

[na_th_an]

Thanks for the help, but one more question.

To use sin,cos...ect in qb the angle must be in radians and not degree's as on most calculators. Is there a pi function?? I know to convert you use degree*(pi/180). Or is there another way of doing this? I looked in the help section but could not find anything.

What I do is create a constant CONST PI = ..., and the value I take it from the Windows calculator (I always do this )

Code:

CONS PI = 3.1415926535897932384626433832795

I think it is enough

(but with 3.1415926 you are fine <- those are the digits I know out of mem, I am geek but not that geek )

[whitetiger0990]

(but with 3.1415926 you are fine <- those are the digits I know out of mem, I am geek but not that geek )

I know
3.141592653 =P

how about

Code:

pi# = ATN(1) * 4

I don't know what it is but it's pi =P

[jgr]

Thanks fellas, I used your way whitetiger0990. Thanks again.

[na_th_an]

(but with 3.1415926 you are fine <- those are the digits I know out of mem, I am geek but not that geek )

I know
3.141592653 =P

how about

Code:

pi# = ATN(1) * 4

I don't know what it is but it's pi =P

Easy:

ATN(1) returns 45º in radians (SQR(2)/2), which is 1/8 of a full circle. If you multiply it by four you get half a circle, i.e. PI.

[relsoft]

2 tips:

1. cosine law
2. sine law

These 2 would solve *any* triangle.