It is 3/4 of the pie is left because one slice is 1/4 of the pie and taking 1/4 from 4/4 is 3/4

**Answer:**

44

**Step-by-step explanation:**

I had that question before

**Answer:**

first and fourth options

x = pi/6

x= 11pi/6

**Step-by-step explanation:**

cos(30 degrees) = sqrt(3)/2

as pi stands for a half circle of 180 degrees

30 degrees = pi/6

cos(30) = cos(-30) = cos (330) =

cos(pi/6) = cos(-pi/6) = cos(11×pi/6)

**Step-by-step explanation:**

We can see from the image that z and 20° degrees are complementary, meaning they have a sum of 90°. From this, z = **70°. Hope this helps!**