secx 1. cotx %3D tanx csc 0- cot 0 2. sec 0-1 = cot 0 COS X 3. = sec x+ tanx Sinx 4. cot 0 +tan 0 = csc 0 sec 0 5. (1+tanx- secxI+ cotx+ cscx) = 2 sec u + tan u 6. sec u (sin u +1)2 cos? u tan u

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