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Class 12 Mathematics Trigonometric Functions AnglesHardLevel 67

If ( \theta=\frac{11\pi}{9} ), what is the principal coterminal angle of (2\theta)?

Answer and explanation

Correct answer: ( \frac{4\pi}{9} )

(2\theta=\frac{22\pi}{9}) and ( \frac{22\pi}{9}-2\pi=\frac{4\pi}{9} ). After multiplying, subtract (2\pi).

Tags

trigonometric-functionsanglesmultiple-angle

Frequently asked questions

What is the correct answer to this question?

( \frac{4\pi}{9} )

Why is this the correct answer?

(2\theta=\frac{22\pi}{9}) and ( \frac{22\pi}{9}-2\pi=\frac{4\pi}{9} ). After multiplying, subtract (2\pi).

Which subject and chapter does this question cover?

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

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