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  • 23-09-2019
  • Mathematics
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What is the exact value of cos (-pi/2)

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MathPhys
MathPhys MathPhys
  • 23-09-2019

Answer:

0

Step-by-step explanation:

-π/2 on a unit circle is the same as 3π/2 or 270°.  The cosine of that angle is 0.

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