sun0broo8pezmadiehog sun0broo8pezmadiehog
  • 21-11-2016
  • Mathematics
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how to solve sin(pi/2) without a calculator ...?

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SWAGAndude
SWAGAndude SWAGAndude
  • 21-11-2016

By the definition of the functions of trigonometry, the sine of  is equal to the -coordinate of the point with polar coordinates , giving . Similarly, , since it is the -coordinate of this point. Filling out the rest trigonometric functions then gives
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