Answer:
Part 1:
y= 23
Part 2:
x=20
Step-by-step explanation:
cos(y) = 48/52
y=cos^-1(48/52)
y=22.619864948~23
48^2+x^2=52^2
x^2=2704-2304
x=sqrt(400)
x=20 or -20.
A negative length makes no sense, so x=20
y = 23º
x = 20 cm
Cos∅ = adj/hyp
cosy = 48/52
∅ = arccos48/52
use calculator
∅ = 22.619864948040426
Rounded
∅ = 23º
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a² + b² = c²
x² + 48² = 52²
x² = 52² - 48²
x² = 400
