NAVE77 NAVE77
  • 21-05-2019
  • Mathematics
contestada

Which letter could represent sin -135°?
A. a
B. b
C. c
D. d

Which letter could represent sin 135 A a B b C c D d class=

Respuesta :

calculista
calculista calculista
  • 21-05-2019

Answer:

Option D.

Step-by-step explanation:

we know that

Angle -135° is equal to

360°-135°=225°

The angle belong to the III quadrant

225°-180°=45°

sin(45°)=d/1=d  

therefore

sin(-135°)=-sin(45°)=d  ---> the value is negative

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