SOLUTION: Simplify cos(3pi/2-x)+cos(pi/2+x)
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Question 1080572: Simplify cos(3pi/2-x)+cos(pi/2+x)
Answer by rapture(86) (Show Source): You can put this solution on YOUR website!
cos(π/2) = 0
Cos(3π/2) = 0
cos[(π/2) - x] + cos[(3π/2) + x]
cos(π/2) - cos x + cos(3pi/2) + cos x
0 - cos x + 0 + cos x
- cos x + cos x
Answer: 0
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