Degrees to radians

Convert magnitude of the angle α = 9°39'15" to radians:

Correct result:

α =  0.17 rad

Solution:

α=π180(9+3960+153600)=0.17 rad\alpha = \dfrac{\pi}{180}\left(9+ \dfrac{ 39}{60}+\dfrac{ 15}{3600}\right) = 0.17 \ \text{rad}

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