Theory of Intelligence
11TH•Mathematics•Trigonometric Identities•Exercise 10.4

10.4 Double-Angle Identities

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quizQuestion 1 of 3
Q3

Question 3

Prove the following identities:

Select Part:Part (i) of 4
(i)

sin⁡3x−sin⁡xcos⁡x−cos⁡3x=cot⁡2x\dfrac{\sin 3x - \sin x}{\cos x - \cos 3x} = \cot 2x

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Step-by-Step Solution

Question 3 • Part (i)

verifiedVerified Answer

(i)

sin⁡3x−sin⁡xcos⁡x−cos⁡3x=cot⁡2x\dfrac{\sin 3x - \sin x}{\cos x - \cos 3x} = \cot 2x

Solution

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