Theory of Intelligence
11TH•Mathematics•Trigonometric Identities•Question 3

(iii)

Prove that:

(iii)

sin⁡(θ+π6)+cos⁡(θ+π3)=cos⁡θ\sin\left(\theta + \dfrac{\pi}{6}\right) + \cos\left(\theta + \dfrac{\pi}{3}\right) = \cos\theta

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