2) c^2=b^2+a^2, c=2,6m and b=1m
(2,6)^2=1^2+a^2
6,76=1+a^2
5,76=a^2
...a=2,4 m...
Sina=a:c
Sina=2,4:2,6
Sina=0,923
...a=113 gradysov...
Sinb=b:c
Sinb=1:2,6
Sinb=0,385
...b=157 gradysov...
4) Sina=a:c
Sin28=10:c
0,4695=10:c
...c=21,3 cm...
c^2=b^2+a^2, c=21,3cm and a=10 cm
(21,3)^2=b^2+10^2
453,69=b^2+100
b^2=353,69
...b=18,81 cm...
Sinb=b:c
Sinb=18,81:21,3
Sinb=0,883
...b=62 gradysa...
6)Sinb=b:c
Sin43=b:20
0,682=b:20
...b=13,64 cm...
c^2=b^2+a^2, c=20cm and b=13,64 cm
(20)^2=(13,64)^2+a^2
400=186,05+a^2
a^2=213,95
...a=14,63 cm...
Sina=a:c
Sina=14,63:20
Sina=0,7315
...a=47 gradysov...
8)Cosb=a:c
Cos41=1,3:c
0,7547=1,3:c
...c=1,7m...
c^2=b^2+a^2, c=1,7 m and a=1,3 m
(1,7)^2=b^2+(1,3)^2
2,89=B^2+1,69
b^2=1,2
...b=1,095 m...
Sina=a:c
Sina=1,3:1,7
Sina=0,7647
...a=50 gradysov...