Answer:
The y coordinates become the opposite of what they already are.
Step-by-step explanation:
Example: (3,2) -> (3,-2). (-4, -7)-> (-4,7)
<span>(a.)
Let's say α is the angle that subtends from the top of the screen to horizontal eye-level.
Let β be the angle that subtends from the bottom of the screen to horizontal eye-level.
tanα = (22 + 10 - 4) / x = 28/x
α = arctan(28/x)
tanβ = (10 - 4) / x = 6/x
β = arctan(6/x)
Ɵ = α - β
Ɵ = arctan(28/x) - arctan(6/x)
(b.)
tanƟ = tan(α - β) = (tanα - tanβ) / (1 + tanα tanβ)
tanƟ = (28/x - 6/x) / [1 + (28/x)(6/x)]
tanƟ = (22/x) / [1 + (168/x²)]
tanƟ = 22x / (x² + 168)
Ɵ = arctan[22x / (x² + 168)]</span>
Actually, bot are equal. Because 3 feet make a yard and there 2 yard so 6 feet made 2 yards.
Answer:
Step-by-step explanation:
∠CBA + ∠ABD = 180 {linear pair}
2x - 6 + x +1 = 180
3x -5 = 180
3x = 180 +5
3x = 185
x = 185/3
x = 61 2/3
The total surface area of a cylinder with 5cm height and radius 2cm is :
28π cm²
<h3>What is cylinder?</h3>
One of the most fundamental curvilinear geometric shapes, the cylinder has historically been thought of as a three-dimensional solid. Geometrically speaking, it has been referred to as a circle-based prism.
Analysis:
The total surface area of a cylinder is : 2πrh + 2π
where radius = 2cm , Hight = 5cm
Total surface area = 2 x π x 2 x 5 + 2 x π x 2 x 2
= 20π + 8π = 28π cm2
In conclusion, the total surface area of the cylinder is 28π cm2.
To know more about cylinder visit:
brainly.com/question/27795300
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