Solution des triangles rectangles

  γ = π/2
α + β = π/2
CotÚs :
a = c x sin α = c x cos β
b = c x sin β = c x cos α

a = b x tan α = b x cotan β
b = a x tan β = a x cotan α

  HypotÚnuse :
c = a / sin α = a / cos β
= b / sin β = b / cos α

 

 

 

 

 

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