(78+1119 )2]B=COS337043'

4

)

3

:

[ (

34567

)

.

(

78+1119

)

2

]

B=cos

3

37

0

43'.cotg

5

19

0

30' −

3

15 sin

2

57

0

42'. tg

4

69

0

13'A=

(

13+2135

(

56+326cos

4

19

0

36 ':3

5 cotg

6

52

0

09'