[Request] Maths Formulae (1 Viewer)

[oneyay]

I need help on the formulas that we will need to know for the Maths exams TOMORROW! I do relize that they do give SOME of the forumlas but not ALL if you could please help me by giving me some or helping me understand how to use the formulas given to change them around and use them to find other answers.

Thanks in advance.

 

[Zamie]

Trig formulas:

To find an angle in a triange given three sides:
B^2+c^2-a^2
(-------------------- )
2xbxc

 

[QnTiria]

sin: a/sina=b/sinb=c/sinc

exact values(some):
sin30=1/2
sin60=(sq root 3)/2
sin45=1/(sq root 2)

cos-
a sq= bsq. x csq. + 2xaxbxcosA

sohcahtoa

area=axbxsinC
they give you all the geometry area values... XD

 

[oneyay]

^ Sin and Cosine Rules will NOT NOT be in the SC Test as the people doing 5.1 (lowest maths in my school) have not learnt these and it will be unfair to test them, me being in the 5.2 class (middle) just learnt these as we will need it for next year.

So please dont confuse people and post useless information.

 

[QnTiria]

^ Sin and Cosine Rules will NOT NOT be in the SC Test as the people doing 5.1 (lowest maths in my school) have not learnt these and it will be unfair to test them, me being in the 5.2 class (middle) just learnt these as we will need it for next year.

So please dont confuse people and post useless information.

well, SORRY. in that case, drop everything and study for history and geography, because
ONE- you do not need to memorise any formulas-they give it to you
TWO- it's dead easy anyway