Which of the following is equal to sin (11π)/3?

2016-04-20 4:23 pm
A. sin (5π)/3
B. sin (2π)/3
C. sin (8π)/3
D. sin π/3
更新1:

PLEASE HELP

更新2:

Anyone? Please help I don't understand this question...

回答 (3)

2016-04-20 4:26 pm
✔ 最佳答案
A.
You need to simplify 11pie/3
One revolution on the unit circle is 2pie so you need to subtract 2pie from 11pie/3.
(11pie/3 -2pie)
(11pie/3- 6pie/3)
(5pie/3)
2016-04-20 5:33 pm
sin (11π)/3
= sin (π)/3, sin(5π)/3, sin (8π)/3
Answer choice:
A. sin (5π)/3
C. sin (8π)/3
D. sin π/3


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