The degree measure of $\dfrac{\pi}{8}$ is : (a) $22^\circ 60'$ (b) $20^\circ 60'$ (c) $20^\circ 30'$ (d) $22^\circ 30'$

The degree measure of (π)/(8) is : (a) 22^° 60' (b) 20^° 60' (c) 20^° 30' (d) 22^° 30'

Question 21 of 36

\dfrac{\pi}{8}

(a)

22^\circ 60'

(b)

20^\circ 60'

(c)

20^\circ 30'

(d)

22^\circ 30'

Puducherry TnboardTamil Nadu HSC First Year (DGE) Commerce Board 2022MCQ· 1mImportance★★★★★

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Use $\pi=180^\circ$ : $\tfrac{\pi}{8}=22.5^\circ$ , and the $0.5^\circ$ is $30'$ , giving $22^\circ 30'$ .

Since $\pi$ radians $=180^\circ$ ,

$\frac{\pi}{8} = \frac{180^\circ}{8} = 22.5^\circ$

Convert the decimal part to minutes using $1^\circ = 60'$ :

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