Answer:
2a) x=40.44, y=2.816
Step-by-step explanation:
2a)
Use SOHCAHTOA. You have the opposite (2.4) and the hypotenuse (3.7)
so you use SOH, which means sin(x) = opposite/hypotenuse
so x = sin⁻¹ (2.4 / 3.7) ≈ 40.44.
To find y, we use, CAH: cos(x) = y / hypotenuse
y = cos(x) * hypotenuse = cos(40.439793) * 3.7 ≈ 2.816
Answer:
602.9 cm²
Step-by-step explanation:
==>Given:
A hemisphere with radius of 8cm
π = 3.14
==>Required:
Total surface area of hemisphere
==>Solution:
The total surface area of the hemisphere (TSA) = Curved surface area of hemisphere (CSA)+ base area (BA)
If surface area of a sphere is given as 4πr², therefore, the area of a hemisphere would be ½ of 4πr² = 2πr²
CSA = 2πr²
Base area (BA) = area of circle = πr²
Thus, TSA = 2πr2 + πr2 = 3πr2
TSA of hemisphere = 3 × 3.14 × 8²
TSA = 3 × 3.14 × 64
TSA = 602.88
TSA of hemisphere = 602.9 cm² (approximated to 1 decimal place)
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A graph is a way to represent a lot of data in such a visual format that it is easy for the user to understand the complete information in one go. The correct statement is D.
<h3>What is a graph?</h3>
A graph is a way to represent a lot of data in such a visual format that it is easy for the user to understand the complete information in one go. Usually, the line of the graph is a function that follows the graph.
If we draw the graph of the Cohen family, then the graph will look as shown below. Therefore, if we observe the graph of the Cohen family and the graph of the Mason family. Then we will observe that the wheat production of both farms will approach a stable amount as the years pass.
Hence, the correct statement is D.
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