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
frez [133]
2 years ago
15

What is the angle of angle A in degrees

Mathematics
2 answers:
Margaret [11]2 years ago
7 0
Answer:
120°

Step-by-step explanation:
Triangle ABC is an isosceles triangle, which means ∠C = ∠B.
And the total degrees of a triangles inner angles is 180°.
So to find ∠A all you do is 180° - (∠C + ∠B).
∠C + ∠B would be 30+30 which is 60°
And 180° - 60° is 120°.

Hope this helps!
-BARSIC- [3]2 years ago
3 0

\huge\fbox{Answer ☘}

From the figure , it is quite clear that the sides AB and AC have the same measure , i.e. , 8 units .

we know that ,

angles opposite to equal sides are equal.

therefore ,

∠B = ∠C = 30°

Now ,

angle sum property of a ∆ states that the sum of all the angles of a triangle equals 180°

thus ,

∠A + ∠B + ∠C = 180° \\  \\ ∠A + 30° + 30° = 180° \\  \\ ∠A + 60° = 180° \\  \\ ∠A = 180° - 60° \\  \\ ∠A = 120°

therefore ,

option ( c ) 120° is correct .

hope helpful ~

You might be interested in
find the sum of a 9-term geometric sequence when the first term is 4 and the last term is 1,024 and select the correct answer be
olasank [31]
Hello,

u_{1} =4\\
 u_{2} =4*q\\
 u_{3} =4*q^2\\
...\\

 u_{9} =4*q^8\\\\
==\textgreater\ 4*q^8=1024\\
==\textgreater\ q^8=256\\
==\textgreater\ q=2\mbox{( and there is a problem in the question) } \ or \ q=-2\\
if\ q=2 \ then\  \sum_{i=0}^{8}\ 4*(2)^i= 4*\dfrac{1-2^9}{1-2} =2044\\

if \ q=-2 \ then\ \sum_{i=0}^{8}\ 4*(-2)^i= 4*\dfrac{1-(-2)^9}{1+2} =684\\





Answer B (but see the problem)
7 0
3 years ago
Read 2 more answers
How many thousands are in 327,412?
Alexxandr [17]

Answer:

327

Step-by-step explanation:

In the thousands cateragory of the number lies the numbers 327 giving you your answer

8 0
2 years ago
Luke shaded 20 squares on his hundredths grid. Bekka shaded 30 squares on her hundredths grid. Write two decimals greater than L
Rus_ich [418]
Luke's original decimal is 0.20 and Bekka's is 0.30 so 0.40 and 0.50 would be greater than Luke's original and 0.20 and 0.10 are lesser than Bekka's original decimal
5 0
3 years ago
Read 2 more answers
the produce department of a grocery store sold 288 pounds of tomatoes. the weight represented 72% of the shipment the store rece
Shtirlitz [24]
207.4 pounds originally was received

3 0
3 years ago
Help please :) have a good day
musickatia [10]

Answer:

1)72=-8-5n

+8    +8

2)80=-5n

/-5    /-5

3)-16=n

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • HELP PLZ HOW DO U DO THIS
    14·1 answer
  • Square root of 5 rounded to the nearest tenth
    7·2 answers
  • Ali has a spinner with 12 equal-size sections. Each section is colored blue, red, or yellow. He performs 5 trials in which he sp
    10·1 answer
  • Each year, roughly 10^6 computer programmers each make about $105. How much money is this all together? Express your answer both
    9·1 answer
  • Reflect triangle A in the line y=x
    11·1 answer
  • 478 × 965 in distributive property
    6·2 answers
  • Evaluate: 32 + (8 − 2) • 4 − 6/3
    9·1 answer
  • Please help me with this and pls don't answer if you don't know. thank you!
    7·2 answers
  • the value ax^2 + bx is 5 when x=1, and is equal to 0 when x=1.what are the values of a and b. explain how u arrived at your answ
    13·1 answer
  • What is the answer to this?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!