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2 years ago

What is 720° converted to radians? o 4 о o O 40

Mathematics

1 answer:

hoa [83]2 years ago

4 0

Formula: d° * π/180 = rad

d = number of degrees given

rad = radians

Solve with the given values.

720° * π/180 = rad

720° * 0.0174 = rad

12.559968... = rad

Round to the nearest hundredth.

12.559968... → 12.56

Therefore, the answer is approximately 12.56rads

Best of Luck!

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3 years ago

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Vlad [161]

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$\begin{gathered} 3x+2y-2y=12-2y \\ 3x=12-2y \\ \frac{3x}{3}=\frac{12-2y}{3} \\ x=\frac{12}{3}-\frac{2}{3}y \\ x=4-\frac{2}{3}y\text{ \lparen eq. 3\rparen} \end{gathered}$

Substituting equation 3 into equation 2 and solving for y:

$\begin{gathered} 5(4-\frac{2}{3}y)-y=7 \\ 5\cdot4-5\cdot\frac{2}{3}y-y=7 \\ 20-\frac{10}{3}y-y=7 \\ 20-\frac{13}{3}y=7 \\ 20-\frac{13}{3}y-20=7-20 \\ -\frac{13}{3}y=-13 \\ (-\frac{3}{13})\cdot-\frac{13}{3}y=(-\frac{3}{13})\cdot-13 \\ y=3 \end{gathered}$

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