Trig Me!

Trig Me!

OMG!!! I am so stuffed for my math half yearly tomorrow. I know, i know, it's only 2 unit math, but I can't seem to get the Trig formulas into my head Dx I'm not smart like you.
I still have heaps to study and my night is almost over. Goodbye my aspirations...I don't think I can live up to my own standards :(

Cosine rule can go to hell =.=

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