含有三角函数的积分

（十一）含有三角函数的积分

83.∫sin xdx＝－cos x＋C

84.∫cos xdx＝sin x＋C

85.∫tan xdx＝－ln｜cos x｜＋C

86.∫cot xdx＝ln｜sin x｜＋C

87.∫sec xdx＝ln＋C＝ln｜sec x＋tan x｜＋C

88.∫csc xdx＝ln＋C＝ln｜csc x－cot x｜＋C

89.∫sec2 xdx＝tan x＋C

90.∫csc2 xdx＝－cot x＋C

91.∫sec xtan xdx＝sec x＋C

92.∫csc xcot xdx＝－csc x＋C

93.∫sin2 xdx＝sin 2x＋C

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