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sin, cos, tan stuff
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Terms in this set (12)
sine curve, other angle if less than 180
180-x
sinx=sin(180-x)
sine curve, other angle more than 180
540-x
sinx=sin(540-x)
cosine curve
360-x
cosx=cos(360-x)
tangent (tan) curve
add angle to every 180
eg 0, 180, 360
sine rule [side] (triangles)
a/SinA = b/SinB = c/SinC
sine rule [angle] (triangles)
SinA/a = SinB/b = SinC/c
sine rule, angle obtuse?
substracted answer from 180
cosine rule
a² = b² + c² -2bc CosA
area of a triangle
a=1/2abSinC
sin60
- √3/2
- cos30
cos60
- 1/2
- sin30
sin45
- 1/√2
- cos45
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