Answer:
B. tan (-180°) = 0
Step-by-step explanation:
Tangent is the ratio of opposite to adjacent to an angle
From the unit circle; the opposite to our angle -180° is 0
The adjacent along the x-axis is 1
Therefore;
Tan (-180°) = 0/1
= 0
Therefore; Tan (-180°) is 0
Answer:
Step-by-step explanation:
This is the kind of problem that is most easily solved graphically, because the solution point coordinates give both the time and the altitude.
The attached graph shows the planes both arrive at the altitude of 7093 feet after 52 seconds.
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The equations for altitude in feet (y) as a function of time in seconds (x) are ...
y = 3687 +65.5x . . . . . plane A
y = 5000 +40.25x . . . plane B
Subtracting the second equation from the first gives . . .
0 = -1313 +25.25x
x = 1313/25.25 = 52 . . . . . . . add 1313 and divide by the x-coefficient
y = 3687 +65.5(52) = 3687 +3406 = 7093
After 52 seconds both planes have an altitude of 7093 feet.
6,272,640 square inches = 1 acre
10^6 square inches = 10^6/6,272,640 = 0.16 acre
0.16 acre = $12.50
2 acre = (2 x 12.50)/0.16 = $156.25
The cost coverifng 2 acres of land is $156.75
Answer:
30ft
Step-by-step explanation:
The hypotenuse is the distance from home to second, or side x.
The legs are from home to first and from first to second.