ericlin9123 ericlin9123
  • 17-06-2022
  • Mathematics
contestada

Can someone solve this and explain it in steps to someone that have never learned this?

Can someone solve this and explain it in steps to someone that have never learned this class=

Respuesta :

surjithayer surjithayer
  • 17-06-2022

Answer:

Step-by-step explanation:

in third quadrant sin is negative.

sin² θ+cos² θ=1

sin²θ+(-16/20)²=1

sin²θ+(-4/5)²=1

sinθ=±√(1-16/25)

=±√((25-16)/25)

=±√(9/25)

=±3/5

so

sin θ=-3/5

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