Răspuns :
90 grade 00'-40 grade 44'=49 grade 16'
90 grade 00'-51 grade 30'=38 grade 30'
90 grade 00'-51 grade 30'=38 grade 30'
raspunsul primul exercitiu:49,56
raspunsul la al doilea exercitiu:38,7
raspunsul la al doilea exercitiu:38,7