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#include <iostream> #include <cmath> using namespace std; int main() { cout << atan(0.5) << "\n"; cout << atan(-0.5) << "\n"; cout << atan(5) << "\n"; cout << atan(-5) << "\n"; cout << atan(100) << "\n"; cout << atan(-100) << "\n"; return 0; }
0.463648
-0.463648
1.3734
-1.3734
1.5608
-1.5608
