The sides of the right-angle triangle will be 16 units and 20.30 units. And the missing angle will be 52°.
<h3>What is a right-angle triangle?</h3>
It's a form of a triangle with one 90-degree angle that follows Pythagoras' theorem and can be solved using the trigonometry function.
The side AC will be
tan 38° = 12.5 / AC
AC = 15.999
AC ≈ 16 units
Then the side AB will be
AB² = 12.5² + 16²
AB = 20.30 units
We know that the angle sum is 180 degrees. Then we have
∠A + ∠B + ∠C = 180°
38° + ∠B + 90° = 180°
∠B = 52°
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Additive inverse is the number that when added to a number yields 0.
This is the negation of that number or expression.
The additive inverse of

is

Distribute the negative sign across all the terms in the parentheses. This is the same thing as multiplying each term by -1.


Answer:
D. 10.91 square centimeters
Step-by-step explanation:
Area of a sector of a circle =


where 
radius (r) = half of diameter = 10/2 = 5 cm
Area = 
= 10.91 
2.25=2 1/4
217.35/2.25=x
X=96.6miles/ hour
96.6*3=
289.8 miles
The answer is that Ray traveled 289.8 miles in 3 hours.