9514 1404 393
Answer:
37 degrees
Step-by-step explanation:
The tower and the shadow form legs of a right triangle. The angle of interest is the angle between a direct line from the shadow tip to the tower top, and the ground, adjacent to the shadow. The relevant trig relation is ...
Tan = Opposite/Adjacent
tan(angle of elevation) = (117 ft)/(158 ft)
The arctangent function is used to find the angle that has a given tangent.
angle of elevation = arctan(117/158) ≈ 36.52°
The angle of elevation is about 37°.
If you would like to solve 8.203 * 10^(-15), you can do this using the following step:
1 * 10^(-15) = 0.000000000000001
8.203 * 10^(-15) = 8.203 * 0.000000000000001 = 0.000000000000008203
The correct result would be 0.000000000000008203.
Answer:
the answer is 2.89
Step-by-step explanation:
u divide 289 to 100 or 289/100=2.89
hope this helps
Answer:
20 minutes
Step-by-step explanation:
Given
Required
Determine the time they both arrive together
To do this, we simply determine the common multiple of both numbers:
Start by listing the multiples of 4;
Next, list the multiples of 10
<em>Their common multiple is: 20</em>
<em>Hence, they'll both arrive at 20 minutes</em>
Answer:
a=21.1
Step-by-step explanation:
You can use the given (incorrect) equation and fill in the value of t to find h:
h = 12.5 +9sin(750(3.5)) = 3.68 . . . . feet
__
Or, you can use the correct equation, or just your knowledge of revolutions:
h = 12.5 +9sin(750(2π·3.5)) = 12.5 . . . . feet
in 3.5 minutes at 750 revolutions per minute, the propeller makes 2625 full revolutions, so is back where it started — at 12.5 feet above the ground.