FRA01 FRA01
  • 12-10-2022
  • Mathematics
contestada

Dire si chacune des affirmations suivantes est vraie ou fausse; justifier. Qu'en est-il de leur réciproque ?
a.
Si a = b alors cos(a) = cos(b).

b. Si a €[-īī/2;0] alors sin(a) < cos(a)

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