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Complete the Identity sin⁡(α−β)sin⁡(α+β)=?\frac { \sin ( \alpha - \beta ) } { \sin ( \alpha + \beta ) } = ?

Question 174

Multiple Choice

Complete the identity.
- sin⁡(α−β) sin⁡(α+β) =?\frac { \sin ( \alpha - \beta ) } { \sin ( \alpha + \beta ) } = ?


A) tan⁡αtan⁡β−1tan⁡αtan⁡β+1\frac { \tan \alpha \tan \beta - 1 } { \tan \alpha \tan \beta + 1 }

B) tan⁡α−tan⁡βtan⁡α+tan⁡β\frac { \tan \alpha - \tan \beta } { \tan \alpha + \tan \beta }

C) -1

D) sin⁡α−sin⁡βsin⁡α+sin⁡β\frac { \sin \alpha - \sin \beta } { \sin \alpha + \sin \beta }

Correct Answer:

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