What is the value of sin(-60°)?

1 Answer
Chirag Mehta
Jan 8, 2018

#-sqrt3 /2#

Explanation:

We know that
#color (red)(sin(360-theta)=-sin theta)#

Also We can subtract #2pi# or #360°# from the angle , it can be clearly seen that #180°# and #540°# overlap each other.

Now we get
#sin (-theta)=-sin (theta)=-sin(60°)=-sqrt3 /2#

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