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Core 3 Cheat Sheet
Trigonometry
Degrees Radians Sinx Cosx Tanx
0° 0 0 1 0
1 3 1
30° 6 2 2 3
2 2
45° 4 2 2 1
3 1
60° 3 2 2 3

90° 1 0
2




Reciprocal functions:
1
sec = cos 1
cosec =…

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cos2Acos2A - sin2A 2cos2A - 1 1 - 2sin2A

2tanA
tan2A1-tan2A




asin + bcos :

asinbcosRsin() , with R > 0 and 0 < < 90°

acosbsinRcos() with R > 0 and 0 < < 90°

Where Rcos = a , Rsin = b and R = a2 + b2…

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Differentiating lnx:
dy 1
y = ln x dx = x

dy
y = ln [f (x)] dx = ff((x)
x)




Differentiating trig
dy
y = sin x dx = cos x

dy
y = sin[f (x)] dx = f cos [f (x)]

dy
y = cos x dx =-…

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