Bricjk Ranger, this is the solution:
Part i.
y = Hypotenuse * sin (30)
y = 150 * 0.5
y = 75
Part ii.
Step 1: Let's calculate the lenght of the hypotenuse, as follows:
Hypotenuse or AB = 75/sin (60)
Hypotenuse or AB = 86.6 (to the nearest tenth)
Step 2: Now we can calculate the value of z, this way:
z = √86.6² - 75²
z = √7,500 - 5,625
z = √1,875
z = 43.3
