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
Snezhnost [94]
3 years ago
9

What is the standard form of the equation of a line for which the length of the normal segment to the origin is 8 and the normal

makes an angle of 120° with the positive x-axis?
Mathematics
1 answer:
jeka57 [31]3 years ago
4 0
Slope of line = tan(120) = -tan(60) = - √3
Distance from origin = 8

Let equation be Ax+By+C=0
then -A/B=-√3, or
B=A/√3.
Equation becomes
Ax+(A/√3)y+C=0

Knowing that line is 8 units from origin, apply distance formula
8=abs((Ax+(A/√3)y+C)/sqrt(A^2+(A/√3)^2))
Substitute coordinates of origin (x,y)=(0,0)  =>
8=abs(C/sqrt(A^2+A^2/3))
Let A=1 (or any other arbitrary finite value)
solve for positive solution of C
8=C/√(4/3) => C=8*2/√3 = (16/3)√3

Therefore one solution is
x+(1/√3)+(16/3)√3=0
or equivalently
√3 x + y + 16 = 0

Check:
slope = -1/√3  .....ok
distance from origin
= (√3 * 0 + 0 + 16)/(sqrt(√3)^2+1^2)
=16/2
=8  ok.

Similarly C=-16 will satisfy the given conditions.

Answer  The required equations are
√3 x + y = ± 16 
in standard form.

You can conveniently convert to point-slope form if you wish.




You might be interested in
38 kg of onions cost $144.40. how much would 49 kg cost?
Lerok [7]

Answer:

$186.2

Step-by-step explanation:

   38 kg costs $144.40

∴ 1 kg costs = \frac{144.40}{38}  = $3.8

   49 kg costs = 3.8  x  49

                        = $186.2

7 0
1 year ago
Read 2 more answers
Factors of 4x^3-14x^2+12x
IRISSAK [1]

Step-by-step explanation:

4x³ - 14x² + 12x

= 2x[2x² - 7x + 6]

= 2x[(2x-3)(x-2)]

= 2x(2x-3)(x-2)

7 0
3 years ago
What is the value of the expression below?<br> 72 ÷ 4.5x3+8
Fofino [41]

Answer:

56

Step-by-step explanation:

Apply PEMDAS:

72 / 4.5*3+8\\\\16*3+8\\\\48+8\\\\\boxed{56}

4 0
3 years ago
Which measurement is equivalent to 110 mL
ale4655 [162]
Your answer is 0.110 L

110mL=0.110L
4 0
3 years ago
I BET NO ONE KNOWS THIS Place a checkmark next to each answer choice that describes a situation in which economic indicators mig
Arada [10]

Answer:

E, F, B, and C

Step-by-step explanation:

Im just learning about these kind of things and this is a challenging question not going to lie.

I chose B because expanding and building more factories is apart of economics. You need more land to expand your business, but this will also affect the economy.

C seems like a good answer also because writing about economic trends is an important thing in economics. This also helps others learn out the economy and what not to do and what to do to help make our environment a better place.

I chose E because starting a business is apart of economics. A lot of business are apart of economic systems and help money come into our economy.

F is a good answer for me because the U.S government has been apart of America's economic system for a long time just like they are involved with everything else. The government is a big help and a big part of our economy, especially for america.

7 0
3 years ago
Other questions:
  • What is the answer ?????????
    5·1 answer
  • Cleveland has 64 fl Oz of orange juice how many pints of orange juice does cleveland have??
    7·1 answer
  • Find all of the missing angle measures. Remember you cannot assume right angles or diameters. Also think about how many degrees
    5·1 answer
  • Alex counted to 2400 by 6's beginning with 6. Matthew counted to 2400 by 4's starting with 4. How many of the numbers counted by
    11·1 answer
  • This is a little tricky I need help​
    11·1 answer
  • Find the slope of the line passing through the points <br> B) (5,-2) and (-3,4)
    8·1 answer
  • Find missing measure
    13·1 answer
  • Solve for x for both of these plssss i need help
    9·1 answer
  • ANSWER FAST<br> SHOW YOUR WORK<br><br> 1. 9.5 + x = 14.2
    14·2 answers
  • 3/13 as a long division and decimal show work
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!