Answer:
Step-by-step explanation:
19 from pythagoras theorem
x^2 = 15^2 + 6^2
x^2 = 225 + 36
x^2 = 261
x = sq.root of 261
x=16.2
20 Using SOHCAHTOA
Cos theta = adj/ hypotenuse
cos y = 24/30
cos y = 0.8
y= arc cos 0.8
y = 36.9
