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wassupb66

wassupb66

25.08.2019 •

Mathematics

My so called "friend" didnt want to .

My so called "friend" didnt want to .

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Ответ:

austinpedigo

31.12.2021

$-\sqrt{2}sec(x) = 2$ {0° ≤ x ≤ 360°}
$\frac{-\sqrt{2}sec(x)}{-\sqrt{2}} = \frac{2}{-\sqrt{2}}$
$sec(x) = -\frac{2}{\sqrt{2}}$
$sec(x) = -\frac{2}{\sqrt{2}} * \frac{\sqrt{2}}{\sqrt{2}}$
$sec(x) = -\frac{2\sqrt{2}}{2}$
$sec(x) = -\sqrt{2}$
$sec^{-1}(sec(x)) = sec^{-1}(-\sqrt{2})$
$x = \frac{1}{cos(-\sqrt{2})}$
$x = \frac{1}{cos^{-1}(\sqrt{2})}$
$x = sec^{-1}(\sqrt{2})$
$x = 135\°, 225\°$
The answer is 3.

c² = a² + b²
17² = 8² + b²
289 = 64 + b²
- 64 - 64
225 = b²
15 = b
$cos(x) = \frac{15}{17} =$
$cos^{-1}(cos(x)) = cos^{-1}(\frac{15}{17})$
x = 28.07248694

x = 28.07248694

$28.07248694 = 28\°4'20.95" \approx 28\°4'$
The answer is 2.

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Ответ:

qqbear4555

04.06.2022

b is right

Step-by-step explanation:

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