Sin = Opp. / Hypo
Cos = Adj / Hypo
Tan = Opp. / Adj
1)
SinW = Opp. / Hypo = 4/5
CosW = Adj / Hypo = 3/5
TanW = Opp. / Adj = 4/3
SinT = Opp. / Hypo = 3/5
CosT= Adj / Hypo = 4/5
TanT = Opp. / Adj = 3/4
2) Tan58 = 11/x
so
x = 11/Tan58
x = 11/1.6
x = 6.875
x = 6.9
3)
Sin(?) = Opp. / Hypo
Sin(?) = 32/35
Sin(?) = 0.9143
Missing angle = 66°
