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21 Cards in this Set
- Front
- Back
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cos(a-b) |
cos(a)*cos(b)+sin(a)*sin(b) |
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cos(a+b) |
cos(a)*cos(b)-sin(a)*sin(b) |
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cos(2a) |
2cos^2(a)-1 |
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sin(2a) |
2sin(a)*cos(a) |
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cos(a) =cos(x) |
a=x+2*k*pi ET a=-x+2*k*pi |
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sin(a)=sin(x) |
a=(pi-a)+2*k*pi ET a=a+2*k*pi |
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tan(a)=tan(x) |
a=x+k*pi |
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Transformer sin(a) en cos(a) |
sin(pi/2 +- a) = cos(a) |
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Transformer cos(a) en sin(a) |
cos(pi/2-a) = sin(a) (Attention! +a donne -sin(a) |
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tan(a+b) |
tan(a)+tan(b)/1-tan(a)tan(b) |
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tan(a-b) |
tan(a)-tan(b)/1+tan(a)tan(b) |
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tan(2a) |
2tan(a)/1-tan^2(a) |
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cos(a)+cos(b) |
2cos(a+b/2)cos(a-b/2) |
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cos(a)-cos(b) |
-2sin(a+b/2)sin(a-b/2) |
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sin(a)+sin(b) |
2sin(a+b/2)cos(a-b/2) |
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sin(a)-sin(b) |
2cos(a+b/2)sin(a-b/2) |
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tan(a)+tan(b) |
sin(a+b)/cos(a)cos(b) |
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tan(a)-tan(b) |
sin(a-b)/cos(a)cos(b) |
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cos(a)cos(b) |
1/2(cos(a+b)+cos(a-b)) |
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cos(a)sin(b) |
= 1/2(sin(a+b)-sin(a-b)) |
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sin(a)sin(b) |
= 1/2(-cos(a+b)+cos(a-b)) |
