Question

a)Express 3/5of a right angle into radian measure. b)Express an angle of an equilateral triangle into radian​

Answer 1

a) 3/5 of an right angle = 3/5 × 90° = 54°

To change degree into radian, we have to multiply π/180° to the given angle in degrees.

= 54° × π / 180 radians

= 3π / 10 radians

b) All the angles in an equilateral triangle are same and equal to 60°. Now we have to convert 60° into radians
`.` So we will follow the same method as (a), multiply π/180° to the given angle in degrees.

= 60° × π / 180° radians

= π / 3 radians