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
Mashutka [201]
3 years ago
13

Using the technique in the model above, find the missing segments in this 30°-60°-90° right triangle.

Mathematics
2 answers:
Kitty [74]3 years ago
7 0

Consider right triangle BCD: angle D is right and angle B has measure 60°, then angle C has measure 180°-90°-60°=30°. BC is the hypotenuse of this triangle. In special 30°-60°-90° right triangle the leg that lies opposite to the angle 30° is half of hypotenuse. So, BD=BC/2=2/2=1.

Consider right triangle ABC: angle C is right, angle B has measure 60° and angle A has measure 30°. AB is the hypotenuse of this triangle. In special 30°-60°-90° right triangle the leg that lies opposite to the angle 30° is half of hypotenuse. So, BC=AB/2, therefore AB=2BC=2·2=4 .

The hypotenuse AB consists of two parts: AD and BD. Since AB=4, BD=1, you have that AD=AB-BD=4-1=3.

The height of right triangle drawn to the hypotenuse is the geometrical mean of the previous parts:

CD^2=AD\cdot BD,\\ CD^2=3\cdot 1=3,\\ CD=\sqrt{3}.

Consider right triangle ACD: angle D is right and angle A has measure 30°, then angle C has measure 180°-90°-30°=60°. AC is the hypotenuse of this triangle. In special 30°-60°-90° right triangle the leg that lies opposite to the angle 30° is half of hypotenuse. So, CD=AC/2, AC=2·CD=2·√3=2√3.

Answer: AB=4 (hypotenuse), BD=1 and AD=3 (legs projections on the hypotenuse), CD=√3 (height to the hypotenuse), AC=2√3 and BC=2 (legs).

Harman [31]3 years ago
7 0

Answer: CD=\sqrt{3}


Step-by-step explanation: We are given triangle ABC.

CD is a perpendicular line on AB.

< B = 60°

BC = 2 units.

We need to find the value of side CD.

In triangle BCD, we can see that <CDB is a right triangle, because CD is a perpendicular line on AB.

And <CBD = 60°  that is given.

Therefore, < BCD = 30 degrees angle.

In order to find the value of CD, we can apply 30°-60°-90° right triangle rule to find the value of CD.

<em>According to 30°-60°-90° right triangle rule adjacent side of 60° angle is half of Hypotenuse.</em>

Therefore, BD = Half of BC = 2/2 = 1 unit.

<em>And according to 30°-60°-90° right triangle rule opposite side is \sqrt{3} times of adjacent side of  60° angle.</em>

Therefore, CD = BD × \sqrt{3} = 1×\sqrt{3} = \sqrt{3}.

Therefore, CD =\sqrt{3}.

You might be interested in
HELP ME ASAP PLS
Alla [95]
The vertex point is (0,4)
The two other points are (-2,0)(2,0)
6 0
3 years ago
Solve the system by substitution.<br><br> 6x + 3y = -6<br> 2x + y = -2
Mariana [72]
Solutions 

First Lets solve for this equation 6x + 3y = -6&#10; 

6x + 3y = -6&#10; 

6x+3(-2-2x)=-6&#10;&#10; &#10; 

-6=-6 

Therefore this given equation is a <span>dependent system. 
</span>
<span>Solve for </span>2x + y = -2 

2x+y=-2 

y=-2-2x&#10;&#10; &#10;&#10; &#10; 

There are too many solutions to these equations. 


8 0
3 years ago
Read 2 more answers
Help me with this pls
forsale [732]

Answer:

hey! been a while since I've answered questions haha

typically I would put an explanation for my answers but this one's pretty straightforward so ¯\_(ツ)_/¯

a) mode is the number that occurs most often in a data set.

b) mean is the average or expected value in the data set

c) median is the value that lies in the midpoint in the data set.

4 0
2 years ago
One side of a triangle is 3 times the second side. The third side is 17 feet longer than the second side. The perimeter of a
liberstina [14]

Answer:

Side 1=21 ft, Side 2=7, Side 3=24

Step-by-step explanation:

52 = (3x) + (x) + (x+17) -> 52 = 5x + 17 -> 5x = 35 -> x = 7

Plus 7 into the equation whenever you see an x.

7 0
3 years ago
What is 8 divided by 3526​
Tom [10]

Answer:

8 divided by 3526 is 440.75

Step-by-step explanation:

Hope this helps! Have a nice day! Please consider making me Brainliest

8 0
3 years ago
Read 2 more answers
Other questions:
  • Cami invested $6,000 into an account that earns 10% interest each year.
    13·2 answers
  • HELP ASAP WITH THIS QUESTION
    11·2 answers
  • How much greater is the median number of pairs of shoes in the inventory at the Golf pro Shop than the median number of pairs of
    12·2 answers
  • Crispy clover, a popular vegetarian restaurant, introduced a new menu that had 20% more dishes than the previous menu. The previ
    5·2 answers
  • Select the correct answer from the drop down menu
    10·1 answer
  • Please help!!! need answered quick<br>​
    6·1 answer
  • Please solve for x and show explanation
    12·2 answers
  • Function f(x) has a jump discontinuity at x = 8. Which statement identifies possible one-sided limits at x = 8?
    11·2 answers
  • Can someone tell me the answer?
    10·1 answer
  • Evaluate the root without using a calculator, or note that the root isn't a real number.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!