If an angle is (-210^\circ), what is its coterminal angle between (0^\circ) and (360^\circ)?
Answer and explanation
Correct answer: \(150^\circ\)
Coterminal angles differ by an integer multiple of \(360^\circ\). Here, \(-210^\circ+360^\circ=150^\circ\), and \(150^\circ\) lies between \(0^\circ\) and \(360^\circ\). Therefore, the correct answer is \(150^\circ\). \(210^\circ\) is a different angle and is not obtained by adding \(360^\circ\) to \(-210^\circ\). Exam tip: To convert a negative angle to the standard range, first add \(360^\circ\).
Frequently asked questions
What is the correct answer to this question?
\(150^\circ\)
Why is this the correct answer?
Coterminal angles differ by an integer multiple of \(360^\circ\). Here, \(-210^\circ+360^\circ=150^\circ\), and \(150^\circ\) lies between \(0^\circ\) and \(360^\circ\). Therefore, the correct answer is \(150^\circ\). \(210^\circ\) is a different angle and is not obtained by adding \(360^\circ\) to \(-210^\circ\). Exam tip: To convert a negative angle to the standard range, first add \(360^\circ\).
Which subject and chapter does this question cover?
This is a Class 12 Mathematics question. Chapter: Trigonometric Functions. Topic: Angles.
