Question

Find the radian measure correzponding to -47°30'

Answer 1

The req. Angle in degree =-47. 5
Angle in radian=-47.5׶/180
=-47.5×22/7/180

Answer 2

SOLUTION :

• 47°30'

we know that ,

• 1 degree = 60' and 1 min = 1/60 degree

So,

= - 47 + 30/60 degree

= - 47 + 1/2 degree

= -(94 + 1)/2 degree

= - 95/2 degree

• 180 ° = π radian
• 1° = π/180 radian

= - 95/2 × π/180 radian

= - 19/2 × π/36 radian

= - 19π/72 radian

• So, - 47°30' = -19π/72 radian

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