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Răspuns:

Explicație pas cu pas:

   56°.................69°.........................73°.............................81°

   34°.................21°......................... 17°.............................9°

 124°................111°..........................103°..........................171°

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-

6)

a)

18°15 '

108° 15'

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b)

50° 35 '

140° 35 '

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c)

22°07'

112°07'

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d)

44°31'

134 °31 '