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
jeyben [28]
3 years ago
12

Solve the equation cos(x + 60) =2sinx

Mathematics
1 answer:
iren [92.7K]3 years ago
5 0

Answer:

x ≈ 2.62971017 + π n

Step-by-step explanation:

You might be interested in
Select all of the given trigonometric equations that are true statements. sin(180°) = cos(0°) cos(74°) = sin(16°) sin(20°) = cos
lara [203]

Answer:

Cos 74°= Sin 16°

Sin 20°= Cos 70°

Sin A°=Cos (90°- A°)

Step-by-step explanation:

This is because the three pairs are complementary i.e they add up to 90° and in trigonometric ratios, complementary ratios are equal.

3 0
3 years ago
Bianca wrote the steps for her solution to the equation 2.3 + 8(1.3x – 4.75) = 629.9. She left out the description for the last
Virty [35]

I believe dividing is always the last step.


5 0
3 years ago
Read 2 more answers
Roger's father also compares the text plans from the two companies. He knows that Dial It Up charges $5 for 100 text messages an
brilliants [131]
Okay so what is the question
6 0
3 years ago
Read 2 more answers
12% of children are nearsighted, but this condition often is not detected until they go to kindergarten. A school district tests
Klio2033 [76]

Answer:

There is a 34.60% probability that 0 or 1 of them is nearsighted.

Step-by-step explanation:

For each children, there are only two possible outcomes. Either they are nearsighted, or they are not. This means that we can solve this problem using the binomial probability distribution.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinatios of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In this problem, we have that:

12% of children are nearsighted. This means that p = 0.12.

A school district tests all incoming kindergarteners' vision. In a class of 18 kindergarten students, what is the probability that 0 or 1 of them is nearsighted?

There are 18 students, so n = 18

This probability is:

P = P(X = 0) + P(X = 1)

So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{18,0}.(0.12)^{0}.(0.88)^{18} = 0.1002

P(X = 1) = C_{18,1}.(0.12)^{1}.(0.88)^{17} = 0.2458

So

P = P(X = 0) + P(X = 1) = 0.1002 + 0.2458 = 0.3460

There is a 34.60% probability that 0 or 1 of them is nearsighted.

5 0
3 years ago
Nickolai lives at one end of Oregon Trail. Sydney lives at the other end of the trail. It is 5.8 kilometers from one end of Oreg
OleMash [197]
5.8 km - 2.79 km = 3.01 km

3.01 km = 3010 m
6 0
3 years ago
Read 2 more answers
Other questions:
  • Factor.<br><br> <img src="https://tex.z-dn.net/?f=%2036t%5E%7B2%7D%20" id="TexFormula1" title=" 36t^{2} " alt=" 36t^{2} " align=
    14·2 answers
  • The graph of y = |2x – 2| – 4 is shown.
    10·2 answers
  • A cab company charges $0.80 per mile plus $2 for tolls. Melissa has at most $16 to spend on her cab fare. Write and solve an ine
    10·1 answer
  • Units of length inches, feet, yards,and miles
    6·2 answers
  • 5(x+3) greater than or equal to 3x - 13
    13·1 answer
  • Howto multiply 30 times 30 HELP
    13·2 answers
  • Complete the solution of the equation.find the value of y when x equals 20. -2x + 4y=-4
    7·2 answers
  • PPPLLLZZZZ HHHEEELLLPPPP!!!!!!!<br><br> 2+2=____
    6·2 answers
  • What does 12(6-k) equal​
    11·1 answer
  • The first three steps in writing f(x) = 40x 5x2 in vertex form are shown. write the function in standard form. f(x) = 5x2 40x fa
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!