Rack Up Your Post With Random Stuff Part 9

[DarlingDonald]

Dont ask me for trig. help. I'll screw you up even more.

 

[VMK_MagicalLadee]

You're lucky. I am soooooo bad at it. I don't get it. Wanna be my tutor?

Sure.


Do you know the SOHCAHTOA thing?

 

[marypops!]

i can remember trig :-D the mest way to remember it is SohCahToa (Sin = Opposite over Hypotenuse (sp?), Cos = Ajacent over Hypotenuse (sp?) Tan = Opposite over Ajacent)

 

[VMK_MagicalLadee]

 

[DarlingDonald]

Yeah. We learned that. I have so much trouble remembering it.

 

[marypops!]

i can't remember how to find the sides or angles on any of them :-O teach me them

 

[DarlingDonald]

I don't remember. I'm sooooo bad at this.

 

[VMK_MagicalLadee]

Yes, SOHCAHTOA..

Can ONLY be used for right angled triangles.


Ok so, what if we have two angles and an opposite sides on a non-right triangle? We use the sin law.

If you are finding a side, put the unknown on top.

a = 23
- -
Sin24 Sin 96

Then we cross them. a = 23Sin24
-------
Sin 96

 

[VMK_MagicalLadee]

Sides ( if its a right triangle) can be found using SOHCAHTOA or the Phtyagorean theorum.

a2+b2=c2

Angles can be found if you have 2. Or find one angle then youll have 2.


Then take them away from 180.

All 3 interior angles in a triangle must add to 180.

 

[marypops!]

i remember that :-D yay

now the angle is like:

a = x
Sin24Sin96

a = xSin24
Sin96

right?

 

[DarlingDonald]

I'm still lost. =(

 

[VMK_MagicalLadee]

\

Attempt that for me.

 

[marypops!]

what are we finding out here?

 

[DarlingDonald]

Yeah?

 

[marypops!]

well the side is 9m :-D

 

[DarlingDonald]

I would have never gotten that. Wait, what grades are yawl in?

 

[marypops!]

i'm in yr 10 (which i think is 9th Grade)

 

[DarlingDonald]

Woah. I'm going into 8th grade.

 

[Mickey Mouse Kid]

i hate doing trig.
but you use tan for that. (opp/adj)

tan 46 = 15/12

i think


OOPS WAIT it's hyp

so its...

sin 46 = 15/12

I THINK XD

We had to do this so much last year

 

[VMK_MagicalLadee]

Grade 10.

Ok so.. Geroge. NO, BAD BOY!

Your using Phythagorus.

THIS ISNT A RIGHT TRIANGLE.