Verify the identity. 1- sec 0 tan 0 tan 0 1- sec 0 = 2 cot 0 To verify the identity, start with the more complicated side and transform it to look like the other side. Choose the correct transformations and transform the expression at each step. 1- sec 0 tan 0 tan 0 1- sec 0 = (Do not simplify.) Apply a Pythagorean identity. Apply a reciprocal identity. Combine using the least common denominator.