What are both positive integer values of $$\(n\)$$ which satisfy $$\[ \sin ^{2}\left(\frac{\pi}{6}\right)+\sin ^{2}\left(\frac{2 \pi}{6}\right)+\sin ^{2}\left(\frac{3 \pi}{6}\right)+\ldots+\sin ^{2}\left(\frac{(n-1) \pi}{6}\right)+\sin ^{2}\left(\frac{n \pi}{6}\right)=2016 ? \]$$

A.
2016,2017
B.
4031,4032
C.
2015,4031
D.
4032,8064
Mathematics
Competition
Math League
Exam No:2016 First Round Grades 10-12 Year:2016 Question No:23

Answer:

B

Knowledge points:

G10-12 - Algebra - Trigonometric Identities & Equations

Solution:

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