Which expression is equivalent to sin 7pi/6?
a. sin pi/6
b. sin 5pi/6
c. sin 5pi/3
d. sin 11pi/6

Option: D

Step-by-step explanation:

To find the equivalent option,

= sin 210

= -0.5

Now, check for all the options, select the option which is equal to -0.5.

Check for option: D  

= sin 330

= -0.5

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step-by-step explanation: