alleryThe angle in radians for 120° is:
A2π/3
Bπ/3
C3π/4
D5π/6
Answer & Solution
Correct answer: A. 2π/3
1. Conversion: degrees × π/180 = radians.
2. 120 × π/180 = 2π/3 rad.
3. 60° = π/3; 135° = 3π/4; 150° = 5π/6.
_Source: syllabus Maths Ch 3 §3.2 Degree-Radian Conversion_
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