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
Sonbull [250]
3 years ago
11

Can i get some help? 30-60-90 triangle

Mathematics
2 answers:
Ahat [919]3 years ago
6 0

Answer:

28.28 or 28.3

Step-by-step explanation:

use desmos to help you, it's very helpful :)

Karo-lina-s [1.5K]3 years ago
5 0

Answer: 180 i think

Step-by-step explanation:

You might be interested in
O is the centre of the circle. AB is a diameter.
viktelen [127]

Answer:

The value of a is 63° and the value of b is 27°

Step-by-step explanation:

In the given figure

∵ OA, OB, and OC are radii of the circle O

→ The radii of a circle are equal

∴ OA = OB = OC

In Δ AOC

∵ OA = OC

∴ Δ AOC is an isosceles triangle

→ Base angles of the isosceles triangle are equal

∵ ∠OAC and ∠OCA are the base angles of the triangle

∴ m∠OAC = m∠OCA

∵ m∠OAC = a°

∴ m∠OCA = a°

→ The sum of angles in any triangle is 180°

∵ a° + a° + m∠AOC = 180°

∵ m∠AOC = 54°

∴ a° + a° + 54 = 180°

→ Add the like terms

∴ 2a° + 54 = 180°

→ Subtract 54 from both sides

∴ 2a° = 126°

→ Divide both sides by 2

∵ m∠OAC = m∠OCA = 126 ÷ 2

∴ a° = 63

∴ The value of a is 63°

In ΔBOC

∵ OB = OC

∴ Δ BOC is an isosceles triangle

→ Base angles of the isosceles triangle are equal

∵ ∠OBC and ∠OCB are the base angles of the triangle

∴ m∠OBC = m∠OCB

∵ m∠OBC = b°

∴ m∠OCB = b°

∵ ∠AOC is an exterior angle of ΔBOC at the vertex O

→ The measure of the exterior angle equals the sum of the measure

    of the opposite interior angles to this vertex

∵ ∠OBC and ∠OCB are the opposite interior angle of ∠AOC

∴ m∠OBC + m∠OCB = m∠AOC

→ Substitute their measures

∵ b° + b° = 54°

→ Add the like terms

∴ 2b° = 54

→ Divide both sides by 2

∴ b° = 27

∴ The value of b is 27°

3 0
3 years ago
If Victoria earns $216.30 for working $6 hours in a day, how much does she earn per hour?
geniusboy [140]

Answer:

$36.05

Step-by-step explanation:

Do 216.30 then divide that by 6. With that you get 36.05; the amount she makes per hour.

5 0
3 years ago
Х = бу - 1<br> бу + 5х = 31
Kobotan [32]

Answer:

look search math-way and type your problem in .

Step-by-step explanation:

5 0
3 years ago
Please help i dont understand
Llana [10]

Answer:

imma say 45m

Step-by-step explanation:

im not sure but tell me if im wrong so i can fix it. thanks

4 0
3 years ago
Find the probability of selecting a day that starts with the letter T
Rasek [7]

Answer:

Number of days starting from T are:-

Tuesday

Thursday

So, number = 2

Number of days in a week = 7

So, probability = 2/7

Hope it helps...!!!

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • Al, Pablo, and Marsha shared the driving on a 1,500-mile trip. Which of the three drove the greatest distance on the trip?(1) Al
    13·1 answer
  • Out of a population of 1,500 students, 100 were asked by a random sampling to choose their favorite national park. Their respons
    11·2 answers
  • Rena swims everyday she burns 10.6 calories per minute when swimming and about 15 total calories warming up before she swims m w
    6·1 answer
  • Which measure correctly completes the statement?
    12·1 answer
  • How do i put y= 75x +1,200 in standard form into Ax+ By=c
    6·1 answer
  • Freeeeeee pointssssssss im bored so here ya go
    9·2 answers
  • Solve the systems of equations by elimination-Solo team teach<br><br> 5a-2b = 0<br> 2a-3b = -11
    12·2 answers
  • Find the midpoint of points A(9, 2) and B(6,-4) graphically.
    5·1 answer
  • Jane has a pile of 6 books. Together, the books weigh 4 pounds. If the books aresimilar in weight, about how much does each book
    10·2 answers
  • Zoe has a circular shaped rug on her bedroom floor. The diameter of the rug is 8 feet. What is the circumference of the rug?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!