sin 67.cos 23 - cos 67.sin 23÷
sec43.cosec 47-tan 43.cot 47 -1
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250° 23, COS 9 : _0_25 34. tan 6 is negative. 22. 1970 29, sec 0 I 43 35. cos 6 is positive. 23 ... 47. sin 137° 53. sin 2.4 rad 59. sin 415.5° 65. tan 8.35 rad 48. cos 263° 54. cos 1.93 rad 60.
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