Mathematics

Problem

Which option shows the correct setup for expressing

42^{\circ} 18'

in radians? a)

(42+18)\times\dfrac{\pi}{180}

42+18\times\dfrac{\pi}{180}

\left(42+\dfrac{18}{60}\right)\times\dfrac{\pi}{180}

\left(42+\dfrac{18}{60}\right)\times\dfrac{180}{\pi}