ericlin9123 ericlin9123

17-06-2022
Mathematics

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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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