gabgil08 gabgil08
  • 16-04-2020
  • Mathematics
contestada

if sin(Ф)=3/5, and cos(Ф)=-4/5, which of the following is true?
a.) sin((π/2)-Ф)= 4/5
b.) cos((π/2)-Ф)=-3/5

Respuesta :

ghanami
ghanami ghanami
  • 19-04-2020

Answer:

Step-by-step explanation:

b.) cos((π/2)-Ф)=-3/5 is true because :

cos((π/2)-Ф)= sin(Ф)

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