若θ在第四象限,化简secθ/根号下1+tan²θ+2tanθ/根号下sec²θ-1如题,麻烦详细过程secθ/(根号下1+tan²θ)+2tanθ/(根号下sec²θ-1)
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![若θ在第四象限,化简secθ/根号下1+tan²θ+2tanθ/根号下sec²θ-1如题,麻烦详细过程secθ/(根号下1+tan²θ)+2tanθ/(根号下sec²θ-1)](/uploads/image/z/10150321-49-1.jpg?t=%E8%8B%A5%CE%B8%E5%9C%A8%E7%AC%AC%E5%9B%9B%E8%B1%A1%E9%99%90%2C%E5%8C%96%E7%AE%80sec%CE%B8%2F%E6%A0%B9%E5%8F%B7%E4%B8%8B1%2Btan%26sup2%3B%CE%B8%2B2tan%CE%B8%2F%E6%A0%B9%E5%8F%B7%E4%B8%8Bsec%26sup2%3B%CE%B8-1%E5%A6%82%E9%A2%98%2C%E9%BA%BB%E7%83%A6%E8%AF%A6%E7%BB%86%E8%BF%87%E7%A8%8Bsec%CE%B8%2F%EF%BC%88%E6%A0%B9%E5%8F%B7%E4%B8%8B1%2Btan%26sup2%3B%CE%B8%EF%BC%89%2B2tan%CE%B8%2F%EF%BC%88%E6%A0%B9%E5%8F%B7%E4%B8%8Bsec%26sup2%3B%CE%B8-1%EF%BC%89)
若θ在第四象限,化简secθ/根号下1+tan²θ+2tanθ/根号下sec²θ-1如题,麻烦详细过程secθ/(根号下1+tan²θ)+2tanθ/(根号下sec²θ-1)
若θ在第四象限,化简secθ/根号下1+tan²θ+2tanθ/根号下sec²θ-1
如题,麻烦详细过程
secθ/(根号下1+tan²θ)+2tanθ/(根号下sec²θ-1)
若θ在第四象限,化简secθ/根号下1+tan²θ+2tanθ/根号下sec²θ-1如题,麻烦详细过程secθ/(根号下1+tan²θ)+2tanθ/(根号下sec²θ-1)
secθ/根号下1+tan²θ+2tanθ/根号下sec²θ-1
=secθ/|secθ|+2tanθ/|tanθ|
θ在第四象限
secθ=1/cosθ>0
tanθ<0
原式=1-2
=-1