Find the ratio for sin(-120)

asked Jan 28, 2021 23.7k views

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Answer:

- [square root (3) / 2]

Explanation:

sin( -120) = sin( -120 + 360) = sin 240 = -sin ( 240-180)

-sin60= - [square root (3) / 2]

Remember Sin is negative in the 3rd quadrant and 240 falls on the 3rd quadrant.

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