Can someone please help me with math.

Mathematics

1 answer:

zlopas [31]3 years ago

4 0

Answer:

the answer to the questions are c,b,a

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In ΔPQR, the measure of ∠R=90°, RP = 9.9 feet, and QR = 3.2 feet. Find the measure of ∠P to the nearest tenth of a degree.

zalisa [80]

Answer:

17.9

Step-by-step explanation:

4 0

4 years ago

Solve for w. -18w^2+5=-43w^2 write your answer in simplified, rationalized form

MrMuchimi

Start by isolating the variable on one side by adding 43w^2 to both sides. The equation will read:

25w^2+5=0

*Subtract 5 from both sides*

25w^2=-5

*Divide both sides by 25*

w^2=-1/5

*Take the square root of both sides*

w=√(-1/5)

The square root of -1 is i. The square root of 5 remains √5

The answer is i/√5.

Hope this helps!!

3 0

3 years ago

A security camera is mounted 9 feet above the floor .

jonny [76]

Answer:

$angle = 0.24 rad = 14 °$

Step-by-step explanation:

The angle of depression is the angle formed by the horizontal at the camera position and the line formed by the camera and the objective, therefore it can be calculated from the information provided as shown in the attached file:

First, you draw f' and f" as parallel lines to the floor at the height of the objective and the height of the camera respectively. Then draw the line o between camera and objective.

the blue angle created by o and f" is the depression angle, which is the same as the angle created by o and f' because angles between parallel lines.

You need to calculate b, as:

b = h - a = 9 - 6 = 3

Then, for the trigonometric function tangent as we have a rectangle triangle:

$Tan(angle)=\frac{b}{f'}$