billy18 billy18
  • 13-07-2016
  • Mathematics
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Can someone please answer. There is one problem. There's a picture. Thank you!!

Can someone please answer There is one problem Theres a picture Thank you class=

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olemakpadu
olemakpadu olemakpadu
  • 17-07-2016
Cos(-θ) = Cosθ   By trigonometric identity.

Cos(-360) = Cos360 

Cos360 = 1
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