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Class 12 Mathematics Trigonometric Functions Trigonometric functions and their propertiesHardLevel 70

What is the product form of (\sin x+\sin 3x)?

Answer and explanation

Correct answer: (2\sin 2x\cos x)

Use (\sin A+\sin B=2\sin\frac{A+B}{2}\cos\frac{A-B}{2}). Here the answer is (2\sin 2x\cos x).

Tags

trigonometric-functionssum-to-productidentity

Frequently asked questions

What is the correct answer to this question?

(2\sin 2x\cos x)

Why is this the correct answer?

Use (\sin A+\sin B=2\sin\frac{A+B}{2}\cos\frac{A-B}{2}). Here the answer is (2\sin 2x\cos x).

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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