How can (\frac{19\pi}{6}) be written in terms of complete revolutions and a principal angle?

Question

Answer and explanation

Correct answer: (1) पूर्ण चक्कर और (\frac{7\pi}{6})

(\frac{19\pi}{6}=2\pi+\frac{7\pi}{6}), so one complete revolution and (\frac{7\pi}{6}) remain. In exams, treat (2\pi) as one revolution.

What is the correct answer to this question?

(1) पूर्ण चक्कर और (\frac{7\pi}{6})

Why is this the correct answer?

(\frac{19\pi}{6}=2\pi+\frac{7\pi}{6}), so one complete revolution and (\frac{7\pi}{6}) remain. In exams, treat (2\pi) as one revolution.

Which subject and chapter does this question cover?

This is a Class 12 Mathematics question. Chapter: Trigonometric Functions. Topic: Angles.