Is this considered trigonometry?
also help on these DMS forms.
say...
$\displaystyle 29^o54^\prime21^{\prime\prime}$
$\displaystyle 18^o36^\prime21^{\prime\prime}$
How would these be changed into decimal form and radian form?
To change from DMS to decimal form, remember that
1 degree = 60 minutes = 3,600 seconds.
So convert by dividing by the conversion factors:
$\displaystyle 29^o54^\prime21^{\prime\prime}$
$\displaystyle \begin{aligned}
&= 29^{\circ} + \left(\frac{54}{60}\right)^{\circ} + \left(\frac{21}{3600}\right)^{\circ} \\
&\approx 29.906^{\circ}
\end{aligned}$
To convert to radians, take the decimal form and multiply by $\displaystyle \frac{\pi}{180}$:
$\displaystyle 29.906^{\circ}\left(\frac{\pi\;\text{rad}}{180^{\c irc}}\right) \approx 0.522\;\text{rad}$
I'll let you do the other one.
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