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
Liono4ka [1.6K]
3 years ago
13

in circle c shown below a tangent has been drawn at point A. if measure angle CBA = 28, then explain why the measure of angle DA

B must equal 62 degrees.

Mathematics
1 answer:
Goryan [66]3 years ago
5 0

Step-by-step explanation:

Lines AC and BC are radii of the circle, which means that triangle ABC is an isosceles triangle.

Since triangle ABC is an isosceles triangle, the measures of the base angles CBA and CAB are equal.

We know that the measure of angle CBA = 28º so the measure angle CAB must also equal 28º because the base angles of an isosceles triangle are equal.

Line ED is perpendicular to the radius AC and tangent to circle C at point A.

Therfore, angle EAC is equal to 90º and angle DAC is equal to 90º.

Angle DAC is made up of angle CAB and angle DAB.

So the measure of angle DAC (90º) minus the measure of angle CAB (28º) equals the measure of angle DAB.

90º - 28º = 62º

The measure of angle DAB is 62º

You might be interested in
What is the slope of (-2, -1) and (-5, -9)
djyliett [7]
8/3 pretty sure that’s the answer
5 0
2 years ago
Choose correct way to write 7 cents using the dollar symbol.
OverLord2011 [107]
$.07. You do not write $.7 because that would mean 70 cents and should be written with a 0 at the end anyways. You do not write any dollar amount with a cents sign at the end, because the dollar sign replaces it. You write $.07 because 7 cents means 7/100 (7 one hundredths) so the seven must be written in the hundredths spot. Remember, the hundredth spot is the second number after a decimal.
5 0
2 years ago
Read 2 more answers
Find the missing side.​
sesenic [268]

Answer:

10

Step-by-step explanation:

Area of traingle:1/2

50=1/2.10.x

50=5x

50/5=5x/5

50/5=5x/5  

x=50/5

x=10

3 0
3 years ago
Which of the following modifications to the list of assets and liabilities below would result in an increase in net worth?
Nesterboy [21]
A and d because money is coming in
6 0
3 years ago
Read 2 more answers
Write the contrapositive of the conditional statement. Determine whether the contrapositive is true or false. If it is false, fi
Mila [183]
If you are 16 years old then you are a teenager Question 14
6 0
3 years ago
Other questions:
  • You spend $77 shopping. You buy some shirts at $12 each, and spend $5 on food. How many shirts did you buy? A. 5x + 12 = 77 B. x
    5·1 answer
  • There are 45 children in a class. if 9 of them are absent, what percentage of the class is present?
    15·1 answer
  • P- please<br><br> E- end<br><br> M- my<br><br> D- depression<br><br> A- and<br><br> S- suffering
    8·1 answer
  • How do you put y+2x=5 into slope-intercept form?
    11·2 answers
  • 1) Which of the following is a measurement of length? *
    13·1 answer
  • 5TH GIVEAWAY!<br><br> 5 GIVEAWAYS LEFT!<br><br> EA SPORTS!
    9·2 answers
  • I need help with this :)
    7·1 answer
  • Please help will give brainliest
    11·2 answers
  • The ratio of the measures of the three angles of a triangle is 6:9: 10.<br> Find the angle measures.
    14·1 answer
  • The blue dot is what value on the number line -6 -10
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!