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Class 12 Mathematics Trigonometric Functions Trigonometric functions and their propertiesMediumLevel 72

What is the value of (\cos(\pi+\theta))?

Answer and explanation

Correct answer: (-\cos \theta)

( \pi+\theta) is in the third quadrant and cosine is negative. In exams recall the sign table quickly.

Tags

trigonometric-functionsallied-anglescosine

Frequently asked questions

What is the correct answer to this question?

(-\cos \theta)

Why is this the correct answer?

( \pi+\theta) is in the third quadrant and cosine is negative. In exams recall the sign table quickly.

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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