SOLUTION: Is the following expression true or false? {{{ sin a = sin(a - 6pi) }}} Thank you.

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Question 1058787: Is the following expression true or false?
+sin+a+=+sin%28a+-+6pi%29+
Thank you.
Found 2 solutions by josmiceli, ikleyn:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+sin%28a%29+=+sin%28+a+-+6%2Api+%29+
I think it is true
+6%2Api+=+3%2A%28+2%2Api+%29+
Each +2%2Api+ rotation puts you back
where you started, so +3%2A%28+2%2Api+%29+
does the same thing, and there is no effect
on +a+

Answer by ikleyn(52756) About Me  (Show Source):