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
hjlf
3 years ago
12

Hurry pleaseeee taking a test Which expression is equivalent to 30°? Inverse of cosine (StartFraction StartRoot 3 EndRoot Over 2

EndFraction) Inverse of sine (StartFraction StartRoot 3 EndRoot Over 2 EndFraction) Sine (StartFraction StartRoot 3 EndRoot Over 2 EndFraction) Cosine (StartFraction StartRoot 3 EndRoot Over 2 EndFraction)
Mathematics
2 answers:
nika2105 [10]3 years ago
8 0

Answer:

Inverse of cosine (StartFraction StartRoot 3 EndRoot Over 2 EndFraction)

Step-by-step explanation:

According to trigonometry identity;

Cos 30° = √3/2

To get the expression equivalent to 30°, we will take the inverse of both sides as shown;

Cos^-1(cos 30°) = cos^-1(√3/2)

The arccos will cancel out the cos on the left hand side of the equation to have;

30° = cos^-1(√3/2)

Hence 30° is equivalent to inverse of cosine of √3/2 or Inverse of cosine (StartFraction StartRoot 3 EndRoot Over 2 EndFraction)

AleksAgata [21]3 years ago
6 0

Answer:

the Answer is A

Step-by-step explanation:

Edge 2020

You might be interested in
Does anyone know how to do synthetic division? I'm so lost.
madam [21]
For (polynomial)/(x-constant)
do

constant | coefients of polynomial
               |___________________

if write 1 for every power, if a power is missing, write 0 tehre
this is kind of complicated
so what you do is start at the top, at the first number inside that wierd thing
bring it down below the line
multiply the left number
move it up and right 1 collumn
add that collumn,  and write the sum below the line
repeat

so for  yours
(x-4) so the constant outside is 4

so
4|1  13  -64  -20  16
  |_______________

bring down the first row thing
4|1  13  -64  -20  16
  |_______________
   1

multily by 4 and move up and right
4|1  13  -64  -20  16
  |___<u>4__________</u>
   1

add
4|1  13  -64  -20  16
  <u>|___4__</u>________
   1    17

multiply and move
4|1  13  -64  -20  16
  |__<u>_4__68_</u>_____
   1    17

add
4|1  13  -64  -20  16
  <u>|___4__68______</u>
   1    17  4

multiply and move
4|1  13  -64  -20  16
  |___<u>4__68_16_</u>__
   1    17  4   

add
4|1  13  -64  -20  16
  |___<u>4__68_16</u>___
   1    17  4     -4

multiply and movie
4|1  13  -64  -20  16
  |___<u>4__68_16_-16</u>
   1    17  4     -4

add
4|1  13  -64  -20  16
  |___<u>4__68_16_-16</u>
   1    17  4     -4   0

so the coefients 1,17,4,-4,0
and since we started with 4th degree (x^4) we minus 1 (to get x^3)
1x^3+17x^2+4x-4 and 0 remainder
2nd option is your answer
5 0
4 years ago
What is 2 multiplied by 4
Elis [28]

Answer:

2*4 is 8

hope this helps

8 0
3 years ago
Read 2 more answers
1. Draw the graph of f(x) = cos x for 0 I know how to construct the graph but I don’t know how to get the figures. Please help
KengaRu [80]

Answer:

Please refer to the attached figure.

Step-by-step explanation:

Given the function:

f(x) =cosx \ where\  \{0^\circ\leq x\leq 360^\circ\}

OR, the given function can also be written as:

y  = f(x) = cosx

We know that graph of cosine is a wave.

and the range of cosine function is [-1, 1]

First of all, let us have a table of values at major values of x.

x = 0, f(x) = 1\\x = 90, f(x) = 0\\x = 180, f(x) = -1\\x = 270, f(x) = 0\\x = 360, f(x) = 1

So, the table of values for f(x) is:

\begin{center}\begin{tabular}{ c c }x & cosx \\0 & 1 \\90 & 0\\180 & -1\\270 & 0\\360 & 1\\\end{tabular}\end{center}

Let us mark these points on the xy coordinate axis where x axis represents value of<em> x </em>and y axis represents value of f(x)  = cosx and then join the points using a wave.

Please refer to the attached graph for the answer image.

8 0
3 years ago
Write an equation to model the situation and
DENIUS [597]

Answer:

Step-by-step explanation:

I think 65 divided by 625 is 104 phones jill sold srry if I’m wrongI’m just a kid trying to figure out all this work

3 0
3 years ago
What property allows 3=x to be written as x=3
borishaifa [10]
It's the same thing, the different is depends in which side was x
5 0
3 years ago
Other questions:
  • (12f-8g+3h)-(4f-g+5h)
    13·2 answers
  • In the triangle, BC is the length of the mid-segment. Find the length of DE.​
    10·1 answer
  • What is one more than a square number?
    8·1 answer
  • If 2 1/2 gallons of gas cost $7.50, then how much would 1 1.2 gallons cost
    6·1 answer
  • The following triangular prism has a base that is a right triangle. Help Please I'm Out Of Time ;( Draw or describe the net of t
    14·1 answer
  • Maya has 12 pens that she want to put into equal groups. can she put the pens in groups of the following numbers with none left
    9·1 answer
  • What is the perimeter of the triangle?<br> units
    12·1 answer
  • Find the inequality represented by the graph
    12·2 answers
  • Mathhh- PLEASE ANSWER
    11·1 answer
  • mark has a board that is 12 feet long he cuts the board into 8 peices that are the same lenght. how long is each peice
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!