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
igor_vitrenko [27]
3 years ago
15

3. In the diagram O is the centre of

Mathematics
1 answer:
ValentinkaMS [17]3 years ago
5 0

Answer:

Step-by-step explanation:

a) angle CAD= angle ODA ( in triangle OAD, OA=OD(same radius) angels opp                          to equal sides are equal)

hence angle CAD=42

b)angle b =90(angle subtended by diameter)

hence using angle sum property in triABC,

angle ACB=66-------------eq4

c) in tri OAD,

Angle AOD=180-(42+42)-------(using angle sum prop.)

=> 96-----------------eq1

angleACD=1/2 Angle AOD ( angle subtende by an arc at centre is double the angle subtended...)

hence angle ACD =1/2 x 96(from eq1)

angleACD=48--------------eq3

from eq 3,and eq4,

angle BCD= 48+66

=114 degree...

hope this helped you........pls mark brainliest

You might be interested in
The fraction in order form least to greatest 1/2 2/5 6/10
Over [174]
2/5,1/2,6/10 hope that helped!
8 0
3 years ago
Read 2 more answers
Find the value of x. Round to the nearest tenth. The diagram is not drawn to scale.
VladimirAG [237]

x = 11 x cos(22)

x = 10.199

x = 10.2

6 0
2 years ago
Read 2 more answers
The area of a semicircle is A=1/2(3.14)r^2 solve for r
Inessa05 [86]
First divide bot sides of the formula by 1/2(3.14):-

2A / 3.14 =  r^2

r = sqrt (2A/3.14)
7 0
3 years ago
Divide.<br> Write your answer in simplest form.<br> -6/7 divided by (-5/4) =?
yulyashka [42]

Answer:

\sf \dfrac{24}{35}

Step-by-step explanation:

Use KCF method for fraction division.

  • Keep the first fraction.
  • Change the division operation to multiplication.
  • Flip the second fraction.

\sf \dfrac{-6}{7} \div \dfrac{-5}{4}=\dfrac{-6}{7}*\dfrac{-4}{5}

               \sf =\dfrac{(-6)*(-4)}{7*5}\\\\=\dfrac{24}{35}

8 0
1 year ago
Read 2 more answers
Help for brainliest please
tiny-mole [99]

Answer:

yes I know the answer.com

4 0
2 years ago
Read 2 more answers
Other questions:
  • Convert between cups,pints,quarts,and gallons
    8·1 answer
  • Use the order of operations to simplify the following expression
    12·1 answer
  • A​ country's people consume 6.7 billion pounds of candy​ (excluding chewing​ gum) per year. Express this quantity in terms of po
    6·1 answer
  • What number can go into 68 and 100
    7·1 answer
  • 2x+3y=3 and -10x+2y=-32
    14·1 answer
  • I know school can be hard and believe me I know sometimes u just want to quit but being in school can make a difference so I wan
    11·1 answer
  • Find the product of this​
    13·1 answer
  • nelly went ice skating and rented ice skates from world ice arena. the place charged her $5 per hour, h to go ice skating plus a
    11·2 answers
  • Please help me with the question
    13·2 answers
  • Kennedy's car used 11 gallons to travel 319 miles. How many gallons of gas would she need to travel 406 miles?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!