Answer:
The first question
cos 30 = 50/x
√3/2 = 50/x
x√3 = 100
x = 100√3/3
x = 57.7350 ≈ 57.74
The second question
sin 45 = x/55
√2/2 = x/55
55√2 = 2x
x = 55√2/2
x = 38.8908 ≈ 38.90
The third question
cos 40 = x/34
x = 34 × 0.7660
x = 26.044
