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
sergiy2304 [10]
1 year ago
15

If 1-cosA = 1/2 , Then find the value of sinA.

Mathematics
1 answer:
zimovet [89]1 year ago
8 0

Step-by-step explanation:

Given :

1- cosA = 1/2

or, CosA = 1 -1/2

Therefore ; CosA = 1/2 = b/h

According to the Pythagoras theorem,

P = root under h^2 - b^2

= root under (2)^2 - (1)^2

= root under 4 -1

= root 3

Again,

SinA = P/h

= root 3 / 2

You might be interested in
I REALLY NEED HELP PLS I NEED THIS DONE TODAY!!! JUST LOOK AT THE PICTURE!!!
tensa zangetsu [6.8K]

Answer:

680

Step-by-step explanation:

6 0
2 years ago
I want to plant 45 sunflower plants and 81 rose plants in my garden. If I put the same number of plants in each row and each row
Minchanka [31]

Answer:

Rose plants has the greatest number of plants that can be put in one row that is 27

Step-by-step explanation:

If you wanted to plant 45 sunflowers and 81 rose plants in your garden you have to see which one has more and you get rose plants.all you have to do is subtract 1 from 81 and then put it with sunflowers.

3 0
3 years ago
Need help with this!!!!!!!!
zzz [600]
The linear combination method is the same as the elimination method.  Let's multiply the second equation by -2 so the x terms cancel each other out. When we do that we get a system of 2x-3y=13 and -2x-4y=8.  The x-terms cancel each other out giving us -7y=21 and y = -3.  Now sub -3 into one of the equations to solve for x.  x+2(-3)=-4, and x - 6 = -4.  x = 2.  So the solution for our system is (2, -3)
4 0
3 years ago
Marina is solving the equation below by using the multiplicative inverse, or the reciprocal. One-fifth (x minus 2) = 20 By which
miskamm [114]

Answer:

Step-by-step explanation:

Given the equation:

1/5 × (x - 2) = 20

First step to solving the equation is

By multiplying both sides by the value of 5.

That will give,

x - 2 = 100

x = 100 + 2

= 102

6 0
3 years ago
Read 2 more answers
Jill’s room is 12 feet long and 10 feet wide. she made a scale drawing of the room with a scale of 0.5 inches = 2 feet. what is
umka21 [38]
12/2=6.
6X0.5=3
so the scale drawing is 3 inches long
10/2=5
5X0.5=2.5
so the width of the scale drawing is 2.5 inches
3+3+2.5+2.5=11
3 0
3 years ago
Other questions:
  • Ok i have something to ask what is bigger miles or yard
    8·2 answers
  • An artist wants to frame a square painting with an area of 400 square inches. She wants to know what the length of the wood trim
    7·1 answer
  • The volume of a sphere is found using the formula . If the volume of a sphere is 36 , what is the radius, in feet?
    12·1 answer
  • Six cakes cost £1.80.How Much do ten cakes cost
    5·2 answers
  • 50 PTS Please do not steal or I will report
    6·1 answer
  • 18 000 mg = ____ kg?<br>It's ez, just me the problem :)​
    14·2 answers
  • Sigmund was collecting rocks, and he wanted to share them with his friends. He had 26 rocks and wanted to divide them evenly int
    6·1 answer
  • The height and base radius of a cone are increased by a factor of 2 to create a similar cone. How is the slant height of the con
    8·1 answer
  • A girl 5 ft tall is walking away from a lamp post that is 12 ft high. If the girl is walking at a speed 7ft/s, how fast is the t
    7·1 answer
  • Which equation represents a proportional relationship between x and y values
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!