2 years ago

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

Mathematics

1 answer:

Vinvika [58]2 years ago

3 0

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

sin θ=-3/5

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