7.4 Proving Trigonometric Identities A Equations versus ...

( cos )(1 x )tan2 30. tanx cotx secx cscx 31. sec csc2 x 32. sec x csc x (tanx cotx )2 33. sin2 x cosx (secx cosx ) 34. x x x x cot sec tan tan 2 3 35. x x x x sec tan cot 1 csc 36. x x x 4 2 2 tan cos ( cos )(sec1 37. (1 sinx ) secx (1 cscx ) tanx 38. x x x x sin sec cot csc 39. cos2 (csc )sinx 40. 2 1 (sinsec x )2 x x 2 2 2 1 cot cot cos 42 ... ................
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