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True or False: sin(-85)=-sin(85)

I need to show my work, how do I do so?

1 answer
asked by anthony
13 years ago
332 views
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2. 0

sin -85 = sin (5 - 90)

= sin5 cos90 - cos5 sin90
= -cos5 = -sin85

answered by drwls
13 years ago
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