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Class 12 Mathematics Trigonometric Functions Trigonometric functions and their propertiesEasyLevel 70

What is \(cos(-\theta)\) equal to?

Answer and explanation

Correct answer: \(cos \theta\)

\(cos \theta\) is an even function, so \(cos(-\theta)=\cos \theta\). In an even function, the negative sign does not change the value.

Tags

trigonometric-functionseven-functioncosine

Frequently asked questions

What is the correct answer to this question?

\(cos \theta\)

Why is this the correct answer?

\(cos \theta\) is an even function, so \(cos(-\theta)=\cos \theta\). In an even function, the negative sign does not change the value.

Which subject and chapter does this question cover?

This is a Class 12 Mathematics question. Chapter: Trigonometric Functions. Topic: Trigonometric functions and their properties.

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