corsasport.co.uk
  Not logged in [Login - Register]  
You Are Not Registered Or Not Logged In  

Corsa Sport » Message Board » Off Day » Transposing forumla, help


New Topic
New Poll 		  Subscribe | Add to Favourites

You are not logged in and may not post or reply to messages. Please log in or create a new account or mail us about fixing an existing one - register@corsasport.co.uk

There are also many more features available when you are logged in such as private messages, buddy list, location services, post search and more.


Author Transposing forumla, help
Rob B
Member
Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
User status: Offline
21st Oct 09 at 19:45   View User's Profile U2U Member Reply With Quote
hey guys,

Ive got a test tomorrow and i know how to transpose everything except division really.

Basically say i had

a / SinA = b / SinB

How would you make B the subject ?

Thanks its racking my brains.

Rob
AndyKent
Member
Registered: 3rd Sep 05
User status: Offline
21st Oct 09 at 19:47   View User's Profile U2U Member Reply With Quote
times by SinB?
Matt H
Member
Registered: 11th Sep 01
Location: South Yorkshire
User status: Offline
21st Oct 09 at 19:48   View User's Profile U2U Member Reply With Quote
U2U sent
LeeM
Member
Registered: 26th Sep 05
Location: Liverpool
User status: Offline
21st Oct 09 at 19:49   View User's Profile U2U Member Reply With Quote
b = a/SinA x SinB
dean101287
Member
Registered: 22nd Jul 07
Location: Cardiff
User status: Offline
21st Oct 09 at 19:49   View User's Profile U2U Member Reply With Quote
(a/SinA) x SinB = b


Thats what I would do anyway
Rob B
Member
Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
User status: Offline
21st Oct 09 at 19:55   View User's Profile U2U Member Reply With Quote
Sorry i mean i want to find the big B on its own without the SIN.

thanks
daymoon
Premium Member

Registered: 1st Aug 08
Location: Selby, North Yorkshire
User status: Offline
21st Oct 09 at 19:57   View Garage View User's Profile U2U Member Reply With Quote
(a * sin B)/sin A
Rob B
Member
Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
User status: Offline
21st Oct 09 at 20:09   View User's Profile U2U Member Reply With Quote
Can you show me how you work it out ? Sorry to be a pain but i have a test tomorrow and have to show workings, Thanks again great help
Ste
Premium Member

Avatar

Registered: 5th Mar 03
Location: Taif, Saudi Arabia
User status: Offline
21st Oct 09 at 20:13   View Garage View User's Profile U2U Member Reply With Quote
I'd say it was

(a/SinA) / (b/Sin) = B

I would rather lose by a mile because i built my own car, than win by an inch because someone else built it for me.
daymoon
Premium Member

Registered: 1st Aug 08
Location: Selby, North Yorkshire
User status: Offline
21st Oct 09 at 20:13   View Garage View User's Profile U2U Member Reply With Quote
it really simple

a ............... b
-........ = ...... -
sin A..........sinB

All you do is multiply both sides by sin B ( so thats a x sinB and (sinB x b)/sinb)

sinB on RHS cancels out and u get what i written in my first post. hope thats isnt confusing....

ignore dots

[Edited on 21-10-2009 by daymoon]
Rob B
Member
Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
User status: Offline
21st Oct 09 at 20:13   View User's Profile U2U Member Reply With Quote
Does anyone know for deffinet ?

Cheers for everyone helping though
daymoon
Premium Member

Registered: 1st Aug 08
Location: Selby, North Yorkshire
User status: Offline
21st Oct 09 at 20:15   View Garage View User's Profile U2U Member Reply With Quote
http://www.mathcentre.ac.uk/students.php/all_subjects/trigonometry/sine_cosine/resources/52

have a look there. i think it proves i am right
Rob B
Member
Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
User status: Offline
21st Oct 09 at 20:15   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by daymoon
it really simple

a b
- = -
sin A sinB

All you do is multiply both sides by sin B ( so thats a x sinB and (sinB x b)/sinb)

sinB on RHS cancels out and u get what i written in my first post. hope thats isnt confusing....


I thought you couldn't move the denominator, or is it the other one you can't move ?

I still don't get it as i want just the big B on it's own.
daymoon
Premium Member

Registered: 1st Aug 08
Location: Selby, North Yorkshire
User status: Offline
21st Oct 09 at 20:20   View Garage View User's Profile U2U Member Reply With Quote
ah you want the big B? lol sorry you will need to do sin-1 on you calc. so you need to rearrange the formula to:

(SinA x b)/A=SinB

and then put answer for (SinA x b)/A into your calc, but use Sin-1 function and then put the asnwer.
jamied
Member
Registered: 27th Oct 03
Location: Marbella,Spain Drives: C63
User status: Offline
21st Oct 09 at 20:23   View User's Profile U2U Member Reply With Quote
gobbledegookx5 (dont understand) x6

really tho looks like gibberish
daymoon
Premium Member

Registered: 1st Aug 08
Location: Selby, North Yorkshire
User status: Offline
21st Oct 09 at 20:24   View Garage View User's Profile U2U Member Reply With Quote
i used to do this shit for a level maths
Ian
Site Administrator

Avatar

Registered: 28th Aug 99
Location: Liverpool
User status: Offline
21st Oct 09 at 20:28   View Garage View User's Profile U2U Member Reply With Quote
Your problem is that you are operating a function on B.

You need arcsine.

http://en.wikipedia.org/wiki/Inverse_trigonometric_functions

 
New Topic
New Poll

Corsa Sport » Message Board » Off Day » Transposing forumla, help 23 database queries in 0.2624252 seconds