1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Olin [163]
3 years ago
10

Pls help me I rlly don’t get it :(

Mathematics
1 answer:
zhenek [66]3 years ago
8 0

Step-by-step explanation:

Use SOH-CAH-TOA.

Sine = Opposite / Hypotenuse

Cosine = Adjacent / Hypotenuse

Tangent = Opposite / Adjacent

Let's start with #12.  The hypotenuse is 18.  The side adjacent to ∠B is 6.  Since we have the adjacent side and hypotenuse, we should use cosine.

cos B = 6/18

Solving for B:

B = cos⁻¹(6/18)

Using a calculator:

B ≈ 70.5°

Now let's do #14.  The side adjacent to ∠B is 19, and the side opposite of ∠B is 22.  Since we have the adjacent side and opposite side, we should use tangent.

tan B = 22/19

Solving for B:

B = tan⁻¹(22/19)

Using a calculator:

B ≈ 49.2°

You might be interested in
The table below shows how much paint it takes to paint the walls of a house. A 2-column table with 4 rows. Column 1 is labeled P
algol [13]

Answer:

the answer is c,Yes, because the ratios for each input and output are equivalent.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the slope of line PQ?
Anit [1.1K]

Answer:

Step-by-step explanation:

Slope of a line passing through two points (x_1,y_1) and (x_2,y_2) is given by the formula,

Slope = \frac{y_2-y_1}{x_2-x_1}

Slope of the line PQ passing through the two points P(-8, 2) and Q(4, 2) will be,

Slope 'm_1' = \frac{2-2}{-8-2} = 0

Therefore, slope of the line PQ parallel to the x-axis = 0

Slope of the line MN passing through the points M(8, 6) and N(8, -8) is,

Slope 'm_2' = \frac{6+8}{8-8} = ∞

Therefore, slope of the line MN parallel to y-axis is undefined.

Since, angle between the x-axis and y-axis is 90°,angle at the intersection  point between the lines parallel to x and y axis will be 90°.

These lines are perpendicular to each other.

4 0
4 years ago
Mario surveyed the 17 healthiest patients in the hospital.
ser-zykov [4K]

Step-by-step explanation:

3 0
3 years ago
Doe has 2 3/8 pounds of hamburger meat. He is making 1/4 pound hamburgers .Does doe have enough meat to make 10 hamburgers
DIA [1.3K]
He doesn’t have enough, he has 19/8 and needs 20/8 for 10 burgers, he’s missing 1/8 :)
4 0
3 years ago
Find the exact value of each trigonometric function evaluated at the given angle.
viktelen [127]

Answer:

Step-by-step explanation:

1. A cell is identified by its ........

a. Cell pointer b. cell address c. Box

2. When you measure cones, in which directions you should click on the dots

representing cones.

a. clockwise b. Anticlockwise c. Straight

3. Name the software that can make models of molecules included in

GNU/Linux ?

a. Geogebra b. Kalzium c. Ghemical

4. The abbreviation for Physics Education Technology?

a. PhET b. PHET c. PheT

5. For giving background colour to a slide, click ................. in Slide Menu

a. Character b. Properties c. Paragraph

II. Fill in the blanks (5 x 1 = 5 marks)

6. ............. is the model of pre-designed slides in a presentation software.

7. Name the GNU Linux software that helps to understand the particle nature

of matter.

8. .................. helps you to copy data or formulae to the adjacent cells.

9. What is the name of the tool in GeoGebra used for drawing triangle?

10. To give border lines to the cells in the table select ........... from Format

menu.

P.T.O

III. Match the following (5 x 1 = 5 marks)

Column A Column B

11. PhET a. Microsoft Power Point

12. Kalzium b. Geometrical Shapes

13. Presentation Software c. Calligra Sheets

14. GeoGebra d. Periodic Table

15. Spreadsheet Software e. States of matter

IV. Answer the following questions (5 x 1 = 5 marks)

16. What was the major limitation of Overhead Projector?

17. Which window is to be selected to get information about the elements in

the Kalzium software?

18. Name the website address of PhET Online Simulation?

19. What do you mean by Fill Handle tool in Spreadsheet software?

20. How can you draw triangles and polygons easily, using the Polygon tools?

7 0
2 years ago
Other questions:
  • Enrique says is a rational number. Which of the following best describes if Enrique is correct?
    5·2 answers
  • Solve for x 4x - 4 < 8
    10·2 answers
  • Which equation is a line of symmetry for the graph shown
    5·1 answer
  • you invest 1,600 calculate the balance of your account after 6 years. round your answer to the nearest hundredth
    11·1 answer
  • Change 3240 degrees/second to radians/second
    8·1 answer
  • Your sock drawer has four white socks two brown socks and six black socks. You randomly pick two socks and get a matching pair o
    12·2 answers
  • It has been observed that some persons who suffer acute heartburn, again suffer acute heartburn within one year of the first epi
    15·1 answer
  • Charlie surveyed his friends to learn how much they had grown in the past year.
    15·2 answers
  • What is the surface area of this prism 5cm 5cm 5cm 4cm 10 cm can u show ur steps like this
    7·2 answers
  • Need a second opinion, click on photo if neccessary ​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!