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Olegator [25]
3 years ago
5

Help plzz! Trig Question..

Mathematics
1 answer:
Darina [25.2K]3 years ago
6 0

Answer:

8 meters

Step-by-step explanation:

First, we can draw this out. The angle of depression represents the angle above the line from the bird and the apple, as shown. A line can be drawn from the bird to the apple as well as from the apple's height to the bird's height. A third line can be drawn connecting the line that goes straight up from the apple to the bird, forming a right triangle. We know that this is a right triangle because the purely vertical line from the apple's height to the bird's height is perpendicular to the horizontal line from the bird to the line right above the apple.

Next, we know that we are given an angle and the side adjacent to it. We want to find the length of the side opposite to the angle because that will give us the height from the bird to the apple, and adding that to the height from the apple to the ground will give us the height of the tree. In sohcahtoa, one equation that symbolizes this is tan x = opposite/adjacent, so

tan(55°) = opposite/adjacent

= opposite/4.5

multiply both sides by 4.5 to isolate opposite

tan(55°) * 4.5 = opposite

≈ 6.43

Adding this to the height of 1.5 meters from the apple to the ground, we get the height of the tree to be approximately 7.93, rounding up to 8 meters

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Use the graph to determine the values listed<br> F(-10)=<br> F(-4)=<br> F(-2)=<br> F(0)=<br> F(3)=
SpyIntel [72]
  • F(-10) = -6
  • F(-4) = 0
  • F(-2) = 2
  • F(3) = -7
  • F(0) = -1

<u>Step-by-step explanation:</u>

From the following figure, We can see that we have a graph with different lines where some points are included and some are not . Let's find out the listed values using graph:

<u>F(-10):</u>

From the graph F(-10) = -6 , basically we draw a horizontal line from value of x in graph and see where does that line cut y-axis , and that point is the value of function .

<u>F(-4):</u>

From the graph F(-4) = 0 , basically we draw a horizontal line from value of x in graph and see where does that line cut y-axis , and that point is the value of function .

<u>F(-2):</u>

From the graph F(-2) = 2 , basically we draw a horizontal line from value of x in graph and see where does that line cut y-axis , and that point is the value of function .

<u>F(0):</u>

From the graph F(0) = -1 , basically we draw a horizontal line from value of x in graph and see where does that line cut y-axis , and that point is the value of function .

<u>F(3):</u>

From the graph F(3) = -7 , basically we draw a horizontal line from value of x in graph and see where does that line cut y-axis , and that point is the value of function .

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4 years ago
Which expression is equivalent to the given polynomial expression?
ivolga24 [154]

Answer:

C. -31m⁴n - 8m²

Step-by-step explanation:

Given:

(9mn - 19m⁴n) - (8m² + 12m⁴n + 9mn)

Required:

Determine an expression equivalent to it

Solution:

(9mn - 19m⁴n) - (8m² + 12m⁴n + 9mn)

Distribute the negative sign to open the parentheses

9mn - 19m⁴n - 8m² - 12m⁴n - 9mn

Combine like terms

9mn - 9mn - 19m⁴n - 12m⁴n - 8m²

-31m⁴n - 8m²

Therefore, -31m⁴n - 8m² is an equivalent expression of (9mn - 19m⁴n) - (8m² + 12m⁴n + 9mn)

6 0
3 years ago
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