2cos³θ+sin²﹙2π-θ﹚+cos﹙﹣θ﹚求化简 2cos³θ+sin²﹙2π-θ﹚+cos﹙﹣θ﹚-3/2+2cos²﹙π+θ﹚+cos﹙2π-θ﹚求化简
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 16:31:36
![2cos³θ+sin²﹙2π-θ﹚+cos﹙﹣θ﹚求化简 2cos³θ+sin²﹙2π-θ﹚+cos﹙﹣θ﹚-3/2+2cos²﹙π+θ﹚+cos﹙2π-θ﹚求化简](/uploads/image/z/1129625-17-5.jpg?t=2cos%26%23179%3B%CE%B8%EF%BC%8Bsin%26%23178%3B%EF%B9%992%CF%80%EF%BC%8D%CE%B8%EF%B9%9A%EF%BC%8Bcos%EF%B9%99%EF%B9%A3%CE%B8%EF%B9%9A%E6%B1%82%E5%8C%96%E7%AE%80+2cos%26%23179%3B%CE%B8%EF%BC%8Bsin%26%23178%3B%EF%B9%992%CF%80%EF%BC%8D%CE%B8%EF%B9%9A%EF%BC%8Bcos%EF%B9%99%EF%B9%A3%CE%B8%EF%B9%9A%EF%BC%8D3%EF%BC%8F2%EF%BC%8B2cos%26%23178%3B%EF%B9%99%CF%80%EF%BC%8B%CE%B8%EF%B9%9A%EF%BC%8Bcos%EF%B9%992%CF%80%EF%BC%8D%CE%B8%EF%B9%9A%E6%B1%82%E5%8C%96%E7%AE%80)
2cos³θ+sin²﹙2π-θ﹚+cos﹙﹣θ﹚求化简 2cos³θ+sin²﹙2π-θ﹚+cos﹙﹣θ﹚-3/2+2cos²﹙π+θ﹚+cos﹙2π-θ﹚求化简
2cos³θ+sin²﹙2π-θ﹚+cos﹙﹣θ﹚求化简
2cos³θ+sin²﹙2π-θ﹚+cos﹙﹣θ﹚-3/2+2cos²﹙π+θ﹚+cos﹙2π-θ﹚求化简
2cos³θ+sin²﹙2π-θ﹚+cos﹙﹣θ﹚求化简 2cos³θ+sin²﹙2π-θ﹚+cos﹙﹣θ﹚-3/2+2cos²﹙π+θ﹚+cos﹙2π-θ﹚求化简
要运用诱导公式cos﹙π+θ﹚=-cosθ,原式化简为2cos³θ+cos²θ+2cosθ﹣1/2