Intext problem - 2, 3 — task. Science State Board, Class 8.

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1. Convert $°$ into radian.

$1 ° = \frac{π}{i}$

$60 ° = \frac{π}{i} \times i$

Thus, the radian of 60

$°$ is

$\frac{π}{i}$ .

2. Convert

$\frac{π}{4}$ into degree.

$\begin{array}{l} π radian = i^{°} \\ \frac{π}{i} radian = \frac{i^{°}}{i} \end{array}$

Thus, the degree is

$i^{°}$ .

$1$

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