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Eamcet Mathematics
Trigonometry Transformations

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If α + β + γ = 2θ, then cos θ + cos(θ – α) + cos(θ – β) + cos(θ – γ) =

A. 4sinα/2 .cosβ/2.sinγ/2

B. 4cosα/2 .cosβ/2.cosγ/2

C. 4sinα/2 .sinβ/2.sinγ/2

D. 4sinα .sinβ.sinγ

E. None of the above

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Correct choice: B

Explanation:

None

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Eamcet Mathematics Trigonometry Transformations

Eamcet Mathematics
Trigonometry Transformations