math help

[RING12]

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please .could u let me know what are all of the formulas for sin ,cos ,,, i should know for my test. my test is on thursday. and iam really worry, i feel i do not know anything. 😱

 

[aranjuez]

http://forums.studentdoctor.net/showthread.php?t=311715

aranjuez

 

[ConfusedOne]

sin^2 (x) + cos^2 (x) = 1

soh cah toa

and be able to draw the unit circle to calculate angles. (eg 30 60 90, and 45 45 90 triangles)