Step-by-step explanation:
Area of shaded region = area of exterior rectangle - area of interior rectangle

whats the figure? I need the background knowledge
This is a 3-4-5 triangle.
Remember,
SOH-CAH-TOA
S(ine) = O(pposite)/H(ypotenuse)
C(osine) = A(djacent)/H(ypotenuse)
T(angent) = O(pposite)/A(djacent)
In Cosine, the adjacent = 3, and the Hypotenuse = 5
Hypotenuse is the longest side.
3,4,5 is the triangle that fits inside, therefore, the Opposite is 4, and Adjacent is 3
T(angent) = O(pposite)/A(djacent)
Plug in the numbers
T = 4/3
tan = 4/3 is your answer
hope this helps
Answer:
4
Step-by-step explanation:
Answer: No
Step-by-step explanation:
Complementary means angles add up to 90 degrees.
Supplementary means angles add up to 180 degrees.
Since Supplementary doesn't add up to 180 degrees, the answer is false.