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If pi/2 lt alpha lt pi, pi lt beta lt 3p...

If `pi/2 lt alpha lt pi, pi lt beta lt 3pi/2; sin alpha = 15/17 `and `tan beta = 12/5`, then the value of `sin(beta - alpha)` is (A) `-171/221` (B) `-21/221` (C) `21/221` (D) `171/221`

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