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Musya8 [376]
3 years ago
15

The figure below shows a rectangle with a diagonal drawn.

Mathematics
1 answer:
Kipish [7]3 years ago
3 0

Answer:

<u>Option B. sin(s) = cos(u)</u>

Step-by-step explanation:

The rest of the question is the attached figure.

Complementary angles - two angles that add to 90 degrees.

The sine of one of them will be equal to the cosine of other angle.

For the attached figure:

The set all complementary angles are:

  1. angle s and angle t
  2. angle u and angle v
  3. angle s and angle u
  4. angle t and angle v

We will check the options:

A. sin(t) = sin(u)  ⇒(<u>wrong</u>) because t and u are not complementary angles

B. sin(s) = cos(u) ⇒ (<u>True</u>) ⇒ s and u are complementary angles and sine of one of them will be equal to the cosine of other angle.

C. cos(s) = sin(v) ⇒(<u>wrong</u>) because t and u are not complementary angles

D. cos(t) = cos(v) ⇒(<u>wrong</u>) because t and v are complementary angles but sine of one of them should be equal to the cosine of other angle.

<u>The answer is option B. sin(s) = cos(u)</u>

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podryga [215]

Answer:

Do you mean 7 hours a day? If so:

7*60=420

1188/420=2.82ish which rounds to 3 days.

Step-by-step explanation:

4 0
3 years ago
Don't know how to solve this please help. Show work, thank you
anyanavicka [17]
Hello!

We know that the sum of the three angles of a triangle is equal to 180 degrees. This can be represented using the following formula:

A1 + A2 + A3 = 180

With this knowledge, we can successfully find the missing measurements.

We’ll begin with the large right triangle. Because it is a right triangle, we know that one of its angles is equal to 90 degrees. We are also given that its second angle has a measure of 65 degrees. Insert this information into the formula above and combine like terms:

(90) + (65) + A3 = 180
155 + A3 = 180

Now subtract 155 from both sides of the equation:

A3 = 25

We have now proven that the third angle has a measure of 25 degrees. Looking at the provided image, you’ll notice that this 25 degree angle is adjacent to the 80 degree angle. We can add these neighboring angles to find one of the missing angles of the medium triangle:

25 + 80 = 105

We have now proven that this larger angle has a measure of 105 degrees. Looking again at the provided image, you’ll notice that this triangle also contains a 50 degree angle. Using the “three-angles” formula, we can find the remaining angle of the medium triangle. Insert any known values and combine like terms:

(105) + (50) + A3 = 180
155 + A3 = 180

Now subtract 155 from both sides of the equation:

A3 = 25

We have now proven the third angle of the medium triangle to have a measure of 25 degrees. Consequently, we now have now proven two of the three angles of the smallest triangle. Again using the “three-angles” formula, we can find the measure of the missing angle (x). Insert any known values (using the variable “x” to represent the missing angle) and combine like terms:

(25) + (25) + (x) = 180
50 + x = 180

Now subtract 50 from both sides:

x = 130

we have now proven that the missing angle (x) has a measure of 130 degrees.

I hope this helps!
second angle which has a value of 65 degrees. 
3 0
3 years ago
Please help its confusing meeeeee
GaryK [48]

Answer:

<u>p = 21.4 cm</u>

<u>∠P = 44°</u>

Step-by-step explanation:

Apply the Pythagorean Theorem to solve for the length of p.

  • p² + 21² = 30²
  • p² = 900 - 441
  • p² = 459
  • p = √459
  • \fbox {p = 21.4 cm}

Now, take the inverse sine function to find angle P :

  • sin⁻¹ (opposite side / hypotenuse)
  • sin⁻¹ (21/30)
  • sin⁻¹ (0.7)
  • \boxed {44^{o}} (approximately)
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How do i find the missing value of “?”
Sveta_85 [38]
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Multiply the mean of 73 by 5 (numbers you have).
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Subtract the sum you have from the total sum to find your missing number.
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Decrease £2500 by 1%
Dima020 [189]
When you slice 1% away from the total, you have 99% remaining.

99% of £2500  =  0.99 x £2500 = £2475 .
4 0
3 years ago
Read 2 more answers
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