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α = 12° 18‘, β= 74° 46‘; 2 ∙ α + β= ?
\( 24° 36'\ +\ β\ =\ ? \)
\( 24° 36'\ +\ 74° 46'\ =\ ? \)
\( 24° +\ 74° =\ 98° \)
\( 36'\ +\ 46'\ =\ 82'\ =\ 1° 22' \)
\( \normalsize98\degree+1\degree22^{\prime}=99\degree22^{\prime} \)
\( 24° 36'\ +\ β\ =\ ? \)
\( 24° 36'\ +\ 74° 46'\ =\ ? \)
\( 24° +\ 74° =\ 98° \)
\( 36'\ +\ 46'\ =\ 82'\ =\ 1° 22' \)
\( \normalsize98\degree+1\degree22^{\prime}=97\degree22^{\prime} \)
\( 24° 36'\ +\ β\ =\ ? \)
\( 24° 36'\ +\ 74° 46'\ =\ ? \)
\( 24° +\ 74° =\ 98° \)
\( 36'\ +\ 46'\ =\ 82'\ =\ 1° 22' \)
\( \normalsize98\degree+1\degree22^{\prime}=99\degree20^{\prime} \)
\( 24° 36'\ +\ β\ =\ ? \)
\( 24° 36'\ +\ 74° 46'\ =\ ? \)
\( 24° +\ 74° =\ 98° \)
\( 36'\ +\ 46'\ =\ 82'\ =\ 1° 22' \)
\( \normalsize98\degree+1\degree22^{\prime}=100\degree22^{\prime} \)