Cosine(angle) = adjacent leg/ hypotenuse
Cosine( angle ) = 18/20
Angle = arccos(18/20)
Angle = 26 degrees
Answer: 216 - 202 = 14
Step-by-step explanation:
It’s 14 because in my way, I separated the numbers, like this:
200 - 200 = 0
16 - 2 = 14
Since 0 is equal to nothing, the answer is 14.
Answer:
Diameter of tank = 19.5 ft
Step-by-step explanation:
Volume of cylinder = Base area x Height.
Base area = Area of circle

Height = 20 ft.
Volume of tank = 6000 cubic feet .

Diameter of tank = 19.5 ft
Answer:
x = (√21)/2
Step-by-step explanation:
The sides of a 30°-60°-90° triangle have the ratios 1 : √3 : 2. That means the middle-length side is (√3)/2 times the length of the longest side.
x = (√3)/2·√7
