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
navik [9.2K]
4 years ago
15

Given sin x=0.5 what is cos x

Mathematics
2 answers:
irina [24]4 years ago
7 0
sinx=0,5=\frac{1}{2}

sin^2x+cos^2x=1
(\frac{1}{2})^2+cos^2x=1
\frac{1}{4}+cos^2x=1
cos^2x=\frac{3}{4}
cosx=\frac{\sqrt{3}}{2}
or
cosx=-\frac{\sqrt{3}}{2}

:)
Rufina [12.5K]4 years ago
6 0

Answer:

the answer is 0.86603

hope this helps

You might be interested in
the united states house of representatives has 35 more members than four times the number of members in the United States Senate
Leno4ka [110]
1. set the United States Senate to X
2. equation will be 4x + 35 (This answer will be the number of members in the house of representatives)
3. plug in 100 in x
4. 400 + 35 = 435
The number of members in the house of representatives are 435. 
7 0
3 years ago
Write the algebraic expression that matches each graph? PLS HELP I NEED HELP!!!
Vladimir [108]

Looks like y = |x| because the slopes of the lines are both 1

You shift it to the right making it |x-2| and you shift it down making y = -2

combine to get <em>y = |x - 2| - 2</em>.

8 0
4 years ago
Read 2 more answers
F(x)=2x+4 when domain is {-2,0,3}
anzhelika [568]

Step-by-step explanation:

The domain is x. The range is y (or in this case F(x)).

Plug in the numbers in the number set to get a number set for your y.

When the domain is -2:

f(-2) = 2(-2) + 4

f(-2) = -4 + 4

f(-2) = 0

When the domain is -2, the range is 0.

(-2 , 0)

When the domain is 0:

f(0) = 2(0) + 4

f(0) = 0 + 4

f(0) = 4

When the domain is 0, the range is 4.

(0 , 4)

When the domain is 3:

f(3) = 2(3) + 4

f(3) = 6 + 4

f(3) = 10

When the domain is 3, the range is 10.

(3 , 10)

4 0
3 years ago
Help please
MissTica

Answer:

243cm^3

Step-by-step explanation:

By Pythagoras' Theorem,

height of the prism ^2 + 5.4^2 = 7.8^2

height of the prism = ±√(7.8^2 -5.4^2) = ±5.6285cm (5s.f.) (rej. - 5.6285 since height > 0cm)

volume of the prism = 1/2 x 5.4 x 5.6285 x 16 = 243cm^3 (3s.f.)

This is a question on mensuration. If you wish to venture further into it/understand this topic better, you may want to follow my Instagram account (learntionary), where I post some of my own notes on certain topics and also some tips that may be useful to you :)

8 0
3 years ago
On a workday the average decibel level of a busy street is 69 db, with 139 cars passing a given point every minute. if the numbe
Vlad1618 [11]
Decibel is directly proportional to number of cars passing the point. That is,

69 db ----- 139 cars
x   db ----- 17 cars

x = number of cars passing the point per minute on a weekend.

Then,
x= (69*17)/139 = 8.43 db ≈ 8 db
8 0
4 years ago
Other questions:
  • Ten times the square of a nonzero number is equal to forty times the number. what is the number?
    15·1 answer
  • What is 9 to the power of 3
    14·1 answer
  • Can someone help me
    6·1 answer
  • A dead tree was struck by lightening causing it to fall over at a point 10 ft up from its base. If the fallen treetop forms a 40
    8·1 answer
  • Find the unit rate given cost is $6.oo per 2/3 pound
    11·1 answer
  • Write a rule for each pattern. Then use your rule to find the next two terms in the pattern. The numbers are: 1, 4, 9, 16, 25, 3
    8·2 answers
  • Question 5 help please
    7·1 answer
  • What is the y intercept
    8·1 answer
  • (PLEASE HELP GIVING BRAINIELST!!!!) Select the correct comparison
    5·1 answer
  • Use the image below to answer the following question. Find the value of sin x° and cos y°. What relationship do the ratios of si
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!