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β = 87° 12‘ 22‘‘, γ = 12° 29‘ 57‘‘; β – γ = ?
\( 7° 12' 22'' − 12° 29' 57'' =\ ? \)
\( 87° − 12° =\ 75° \)
\( 12' − 29' = −17' \rightarrow 1° −\ 17' = 43' \)
\( 22'' − 57'' = −35'' \rightarrow 1' − 35'' = 25'' \)
\( \normalsize75\degree+43^{\prime}+25^{\doubleprime}-1\degree-1^{\prime}=74\degree42^{\prime}26^{\doubleprime} \)
\( 7° 12' 22'' − 12° 29' 57'' =\ ? \)
\( 87° − 12° =\ 75° \)
\( 12' − 29' = −17' \rightarrow 1° −\ 17' = 43' \)
\( 22'' − 57'' = −35'' \rightarrow 1' − 35'' = 25'' \)
\( \normalsize75\degree+43^{\prime}+25^{\doubleprime}-1\degree-1^{\prime}=74\degree43^{\prime}25^{\doubleprime} \)
\( 7° 12' 22'' − 12° 29' 57'' =\ ? \)
\( 87° − 12° =\ 75° \)
\( 12' − 29' = −17' \rightarrow 1° −\ 17' = 43' \)
\( 22'' − 57'' = −35'' \rightarrow 1' − 35'' = 25'' \)
\( \normalsize75\degree+43^{\prime}+25^{\doubleprime}-1\degree-1^{\prime}=74\degree41^{\prime}25^{\doubleprime} \)
\( 7° 12' 22'' − 12° 29' 57'' =\ ? \)
\( 87° − 12° =\ 75° \)
\( 12' − 29' = −17' \rightarrow 1° −\ 17' = 43' \)
\( 22'' − 57'' = −35‘‘ \rightarrow 1' − 35'' = 25'' \)
\( \normalsize75\degree+43^{\prime}+25^{\doubleprime}-1\degree-1^{\prime}=74\degree42^{\prime}25^{\doubleprime} \)