Question

Find the radian measure of 40degree,20degree

Answer 1

40 degrees 20 minutes

1 degree = 60 minutes  

1 degree = 60'

⇒ 40 degree 20'

⇒ 40 degree + 20'

⇒ 40° + 20°/60

⇒ 40° + 1°/3  

⇒ (120 + 1)°/3

⇒ 121°/3

We know that Radian measure = π*degree measure/180

(22*121)/(7*180*3)

⇒ 2662/3780

= 0.704 radians

Answer 2

Step-by-step explanation:

$\frac{d}{90} = \frac{g}{100} = \frac{2c}{\pi}$

${40}^{0} = \frac{40}{90} \times \frac{\pi}{2} = \frac{2\pi}{9}$

${20}^{0} = \frac{20}{90} \times \frac{\pi}{2} = \frac{\pi}{9}$