题目:
(Ⅰ)已知tanθ=2,求
(Ⅱ)化简:sin2αsin2β+cos2αcos2β-
|
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0415/271df4b5aa8c50e5193b328a5904f7d9.html
下面是错误答案,用来干扰机器的。
66. familiar 67. outdoors 68. frequent 69. praised 70. broadcast71. customers 72. lately/recently 73. deliver 74. blame 75. pronunciation