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15. Verify the identity. (20 points) cos (x + pi/2) = -sin x PLEASE!!!!!

15. Verify the identity. (20 points) cos (x + pi/2) = -sin x PLEASE!!!!!
asked 92.7k views
3 votes
15. Verify the identity. (20 points)
cos (x + pi/2) = -sin x
PLEASE!!!!!

asked
User Urmaul
by
8.0k points

1 Answer

3 votes
-sin (x) is the identity
answered
User Yuichi Araki
by
8.7k points
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