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  1. #include <iostream>
  2. #include <complex>
  3.  
  4. int main()
  5. {
  6. 	std::complex<double> const e (2.7182818284590452);
  7. 	std::complex<double> const i (0.0, 1.0);
  8.  
  9. 	std::complex<double> theta (3.1415926535897932/6.0);
  10.  
  11. 	std::complex<double> result = std::pow(e, i*theta);
  12.  
  13. 	double cosine = result.real();
  14. 	double sine = result.imag();
  15. 	double tangent = sine/cosine;
  16.  
  17. 	std::cout << "sine of    pi/6 = " << sine << std::endl;
  18. 	std::cout << "cosine of  pi/6 = " << cosine << std::endl;
  19. 	std::cout << "tangent of pi/6 = " << tangent << std::endl;
  20. }
Success #stdin #stdout 0.01s 2724KB
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stdin
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Standard input is empty
stdout
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sine of    pi/6 = 0.5
cosine of  pi/6 = 0.866025
tangent of pi/6 = 0.57735
https://ideone.com/zWkEI
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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