3. A fire truck is parked twelve feet
from a burning building. If the fire
hose is aimed at a 37 degree angle to
reach a fire, how far off the ground is
the fire burning?

9.04 feet

Step-by-step explanation:

First, it is important to draw a Right triangle, as the one attached, where "x" represents the height in feet from the ground in which the fire is burning.

In this case you need to use the following Trigonometric Identity:

You can identify that:

Therefore, you can substitute values into :

Finally, you must solve for "x" in order to find its value. You get that this is:

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation: