Mathematics: What is the answer to 3 to the exponent negative 2

What is the answer to 3 to the exponent negative - id321758000, davisnaziyahovz5sk

Ответ:

Casey7019

30.12.2021

Mathematics

$3^{-2}=\left(\frac{1}{3}\right)^2=\frac{1}{9}$

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Ответ:

daedae96

08.08.2022

Mathematics

Step-by-step explanation:

$\frac{ \ {sin}^{2} x + { \cos}^{2} x}{cos \: x} = sec \: x \\ \\ LHS \\ = \frac{ \ {sin}^{2} x + { \cos}^{2} x}{cos \: x} \\ \\ = \frac{ 1}{cos \: x} \:( \because \: \ {sin}^{2} x + { \cos}^{2} x = 1) \\ \\ = sec \: x \\ = RHS \\$

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What is the answer to 3 to the exponent negative 2

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