SOLUTION: express the following in terms of positive acute angles step by step sin(-250)

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Question 1149034: express the following in terms of positive acute angles step by step
sin(-250)
Answer by greenestamps(13203) About Me  (Show Source):
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sin%28-250%29

Add 360 degrees to get a coterminal angle.

sin%28-250%2B360%29+=+sin%28110%29

Sine is positive in quadrants I and II; sin(90+x) = sin(90-x)

sin%28110%29+=+sin%2890%2B20%29+=+sin%2890-20%29+=+sin%2870%29

ANSWER: sin(-250) = sin(70)