Answer:
gallon
Step-by-step explanation:
A gallon is a measuring unit used to measure the liquid capacity. It helps in measuring the volume and capacity of a fluid. The capacity of one gallon is equivalent to 3.79 liters. It is used to denote the measurement of approximately four liters of liquid.
Mrs. Larivierre had filled a tub with water. To measure the water content of the tub, the most appropriate unit would be a gallon.
In this triangle, we have

You should know that
, so that

Divide both sides by
to get

Multiply both sides by
to get

Simplify and solve for
:





Use the identities sec^2(x) = tan^2(x) + 1<span> and </span>cosec^2(x) = 1 + cot^2 (x)<span>, both are derived from the pythagorean identity of </span>1 = sin^2 (x) + cos^2 (x)<span> by dividing through by either sin</span>2<span> or cos</span>2<span> .</span>
Answer:
D
Step-by-step explanation: