一条数学题,关于sinθ、cosθ、tanθ的tan1°tan2°tan3°...tan87°tan88°tan89° / cos²1°+cos²2°+cos²3°+...+cos²87度+cos²88°+cos²89° 可以用下面的公式算:tanθ=sinθ / cosθsin²θ+cos²
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 16:31:27
![一条数学题,关于sinθ、cosθ、tanθ的tan1°tan2°tan3°...tan87°tan88°tan89° / cos²1°+cos²2°+cos²3°+...+cos²87度+cos²88°+cos²89° 可以用下面的公式算:tanθ=sinθ / cosθsin²θ+cos²](/uploads/image/z/378347-59-7.jpg?t=%E4%B8%80%E6%9D%A1%E6%95%B0%E5%AD%A6%E9%A2%98%2C%E5%85%B3%E4%BA%8Esin%CE%B8%E3%80%81cos%CE%B8%E3%80%81tan%CE%B8%E7%9A%84tan1%C2%B0tan2%C2%B0tan3%C2%B0...tan87%C2%B0tan88%C2%B0tan89%C2%B0++%2F++cos%26%23178%3B1%C2%B0%2Bcos%26%23178%3B2%C2%B0%2Bcos%26%23178%3B3%C2%B0%2B...%2Bcos%26%23178%3B87%E5%BA%A6%2Bcos%26%23178%3B88%C2%B0%2Bcos%26%23178%3B89%C2%B0+%E5%8F%AF%E4%BB%A5%E7%94%A8%E4%B8%8B%E9%9D%A2%E7%9A%84%E5%85%AC%E5%BC%8F%E7%AE%97%EF%BC%9Atan%CE%B8%3Dsin%CE%B8+%2F+cos%CE%B8sin%26%23178%3B%CE%B8%2Bcos%26%23178%3B)
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