2012 · Q83
Consider the following statements:
- 1The angular measure in radian of a circular arc of fixed length subtending at its centre decreases if the radius of the arc increases.
- 21800 degrees is equal to 5*pi radian.
Which of the statements is/are correct?
Elementary MathematicsTrigonometry
- A1 only
- B2 only
- CBoth 1 and 2
- DNeither 1 nor 2
Explanation
theta = l/r decreases as r increases; 1800 degrees = 10*pi radians, so statement 2 is false.