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14 January, 09:23

Find the ratio for sin (-120)

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  1. 14 January, 09:33
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    - [square root (3) / 2]

    Step-by-step 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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