SOLUTION: express sin 320 in terms of sin 40

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Question 1085771: express sin 320 in terms of sin 40
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+320+ degrees is a full circle minus +40+ degrees
+320+=+360+-+40+
So, I can say:
+sin%28+320+%29+=+sin%28+-40+%29+
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The sine function in the 4th quadrant, where -40 degrees is,
is negative.
The sine function in the 1st quadrant , where 40 degrees is,
is positive
I can say:
+sin%28-40%29+=+-sin%2840%29+
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You can dtermine this on a calculator