Verify that the trigonometric equation is an identity. (csc²a-1) (csc²a + 1) = cot*α + 2 cot² a Which of the following statements establishes the identity? 2 2 2 OA. (csc²a-1) (csc²a + 1) = cot²a(csc²a + 1) = cot²a (cot²a +1+1) = cot*a + 2 cot² a OB. (csc²a-1) (csc²a + 1) = tan²a( ²a(sec²a + 1) = tan²a( tan²a +1+1) = cota +2 cot*x + 2 OC. (csc²a-1) (csc²a + 1) = sin ²a (1 + cos² s²a) = sin ²a(1+1- sin²a) = cot*x+2 cot² a a OD. (csc²a-1) (csc²a + 1) = csc²a( cot²a-1) = csc ² cot²x csc²a(csc²a-1-1) = cota +2 = cot*α + 2 cot²a

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