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ANEK [815]
3 years ago
5

What percentage is 1022.40 of 1420 and how do i solve

Mathematics
1 answer:
Liula [17]3 years ago
7 0
Divide 1022.40 by 1420. oh and also × 100
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4 years ago
What are the remaining trig functions? and how do i solve for them? pls help
erastovalidia [21]

You're told that tan(<em>θ</em>) is positive, but

tan(<em>θ</em>) = sin(<em>θ</em>)/cos(<em>θ</em>)

and you're also told that sec(<em>θ</em>) = 1/cos(<em>θ</em>) = -3. So if cos(<em>θ</em>) is negative, sin(<em>θ</em>) must also be negative. In turn, both sec(<em>θ</em>) = 1/cos(<em>θ</em>) and csc(<em>θ</em>) = 1/sin(<em>θ</em>) are also negative.

Now, recall the Pythagorean identity,

cos²(<em>θ</em>) + sin²(<em>θ</em>) = 1

Multiply through both sides by 1/cos²(<em>θ</em>) to get an alternate form of the identity,

1 + tan²(<em>θ</em>) = sec²(<em>θ</em>)

Solve for tan(<em>θ</em>) (which we know is positive):

tan(<em>θ</em>) = √(sec²(<em>θ</em>) - 1) = 2√2

Right away, we get

cot(<em>θ</em>) = 1/tan²(<em>θ</em>) = 1/(2√2) = √2/4

Since sec(<em>θ</em>) = -3, it follows that cos(<em>θ</em>) = -1/3.

Then

tan(<em>θ</em>) = sin(<em>θ</em>)/cos(<em>θ</em>)   ==>   sin(<em>θ</em>) = 2√2 × (-1/3) = -2√2/3

and so

csc(<em>θ</em>) = 1/sin(<em>θ</em>) = -3/(2√2)

6 0
3 years ago
Find the surface area of the pyramid. Correct answer will be marked brainliest!!!!
stepladder [879]

Answer:

178.3 mm²

Explanation:

The surface area of the regular pyramid is equal to the sum of the base and lateral areas:()

5 0
3 years ago
Find u. 30° U 60° 813 Write your answer in simplest radical form, units​
UkoKoshka [18]

Answer:

<h2>24 units</h2>

Step-by-step explanation:

Look at the picture.

We have

a=8\sqrt3\\\\u=a\sqrt3

calculate

u=8\sqrt3\cdot\sqrt3=8\cdot3=24

4 0
3 years ago
Read 2 more answers
3x<br><img src="https://tex.z-dn.net/?f=3x%20%2B%202y%20%3D%201%20and%202x%20-%203y%20" id="TexFormula1" title="3x + 2y = 1 and
Bezzdna [24]
If you mean 12x by “1and2x”. it’s 9x - 5y = 0.

If it’s 1x and 2x it’s y= 2/5x^2 -3/5x, x
7 0
3 years ago
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