Answer:
Option 3 (angle WXY + angle YXZ = 180) is the answer.
Let, the number of hour, she can still watch the T.V. = x
Equation would be: x + 1.5 ≥ 5
Solving the equation:
x + 1.5 ≥ 5
Subtract 1.5 from both the sides,
x + 1.5 - 1.5 ≥ 5 - 1.5
x ≥ 3.5
In short, She can watch 3.5 hours more in that week
Hope this helps!
For this problem, we use our knowledge on trigonometric functions on a right triangle to be able to calculate for the x and y components of the walk. We do as follows:
sin 60 = ax / 9.4
ax = 8.14
cos 60 = ay / 9.4
ay = 4.7