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Find the ratio for sin(-120)

Find the ratio for sin(-120)
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3 votes
Find the ratio for sin(-120)

User Marlina
by
8.0k points

1 Answer

5 votes

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.

User Rajesh Ramachandran
by
8.1k points
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