求解 4g^21,8-tan^21,2/1-tan^21,8tan^21,2

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Trigonometry

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\frac{4 g ^ {2} 1.8 - 0.020947013909659987 ^ {2}}{1 - 0.03142626604335115 ^ {2} 0.020947013909659987 ^ {2}}

对题中的三角函数求值

\frac{7.2g^{2}-0.020947013909659987^{2}}{1-0.03142626604335115^{2}\times 0.020947013909659987^{2}}

将 4 与 1.8 相乘，得到 7.2。

\frac{7.2g^{2}-0.000438777391731488974018953948840169}{1-0.03142626604335115^{2}\times 0.020947013909659987^{2}}

计算 2 的 0.020947013909659987 乘方，得到 0.000438777391731488974018953948840169。

\frac{7.2g^{2}-0.000438777391731488974018953948840169}{1-0.0009876101974274855444911222063225\times 0.020947013909659987^{2}}

计算 2 的 0.03142626604335115 乘方，得到 0.0009876101974274855444911222063225。

\frac{7.2g^{2}-0.000438777391731488974018953948840169}{1-0.0009876101974274855444911222063225\times 0.000438777391731488974018953948840169}

计算 2 的 0.020947013909659987 乘方，得到 0.000438777391731488974018953948840169。

\frac{7.2g^{2}-0.000438777391731488974018953948840169}{1-0.0000004333410264746529889489169778480623561524513573048435891937685025}

将 0.0009876101974274855444911222063225 与 0.000438777391731488974018953948840169 相乘，得到 0.0000004333410264746529889489169778480623561524513573048435891937685025。

\frac{7.2g^{2}-0.000438777391731488974018953948840169}{0.9999995666589735253470110510830221519376438475486426951564108062314975}

将 1 减去 0.0000004333410264746529889489169778480623561524513573048435891937685025，得到 0.9999995666589735253470110510830221519376438475486426951564108062314975。