lucy789 lucy789
  • 16-08-2019
  • Mathematics
contestada

Please help me with this question

Please help me with this question class=

Respuesta :

Percivle
Percivle Percivle
  • 16-08-2019

Answer:

The second option.

Step-by-step explanation:

sin(a + b) = sin(a)cos(b) - cos(a)sin(b)

So:

sin(75°) =

sin(120° - 45°) =

sin(120°)cos(45°) - cos(120°)sin(45°); which is the second option

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