anyone good at trig??

[211183]

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Know the basics...
sin = o/a ect...

sin x + cos x = 1

anyone know any other identities like the sinx + cosx I should know?
radian stuff?

I always skipped this stuff in both HS and college calc... i opted to get those probs wrong... dont know why. On practice DAT exams i just guess and move on... finally realized I should learn it.

those triangles on the pi circle are so intimidating.

Anyone have experience with this? Any "must knows?"

 

[Sea of ASH]

its (sin x)^2 + (cos x)^2 = 1 !!!! watch out.... i do this all the time, lil mistakes always drops my grades lol
from that formula u can get the others

its wouldnt hurt knowing the sin, cos, tan of 30, 60 and 45

i think that should be enough

 

[211183]

what about htat thing like

sin x = cos 90-x
something like that
saw it on a prac test


how does that makes sense if you get a negative #?

are there only two triangles in the pi circle to know? the 45 45 90 and 30 60 90

 

[I-Baby]

Know the basics...
sin = o/a ect...

sin x + cos x = 1

anyone know any other identities like the sinx + cosx I should know?
radian stuff?

I always skipped this stuff in both HS and college calc... i opted to get those probs wrong... dont know why. On practice DAT exams i just guess and move on... finally realized I should learn it.

those triangles on the pi circle are so intimidating.

Anyone have experience with this? Any "must knows?"

You sound like my long lost twin. For some reason, the trig stuff just never sunk in my head. In hs, I was just barely hanging on until we started talking about radians and all that mumbo jumbo. Sometimes I understand it sometimes I don't and usually just give up on those. I'm so scared because I've come across so many posts about people encountering a whole bunch of trig. I want to know the same thing...how deep does the trig get? Are there any questions about the trig function graphs? The graphing is what kills me everytime