Answers
Answer:
[tex]-2,\,\{0^\circ < A < 90^\circ\}[/tex]
Step-by-step explanation:
[tex]\displaystyle \frac{\sqrt{1-\cos^22A}}{\cos(-A)\cos(90^\circ+A)}\\\\=\frac{\sqrt{\sin^22A}}{\cos(-A)\cos(90^\circ+A)}\\\\=\frac{\sin2A}{\cos(-A)\sin(-A)}\\\\=\frac{2\sin A\cos A}{-\cos(-A)\sin(A)}\\\\=\frac{2\cos A}{-\cos(A)}\\\\=-2[/tex]
Note that by the co-function identity, [tex]\cos(90^\circ+A)=\sin(-A)[/tex], and that [tex]\cos(-A)=\cos(A)[/tex] and [tex]\sin(-A)=-\sin(A)[/tex].
Related Questions
I need the answer ASAP!!
Answers
Answer:
it equal 23x , that the answer
HELP ASAP!!Solve for x. Enter the solutions from least to greatest.
X squared minus 5x minus 14=0
lesser x=
greater x=
Answers
what multiplies to negative 14 and adds to negative 5? -7 and positive 2.
(x - 7) (x + 2) = 0
Lesser x = -2
Greater x = 7
Cora is bringing donuts to work as a treat for her co-workers. She buys 12 donuts for $9.96. How much does each donut cost? 30 POINTS FAST NEED HELP
Answers
Divide total cost by number of donuts bought:
9.96 / 12 = 0.83
Each donut cost $0.83
Answer:
0.83
Step-by-step explanation:
number of donuts divided by price
12/9.96=1/X
X=0.83
A rectangle measures 2 1/3 inches by 1 2/3 inches. What is its area?
Please simplify to a fraction and make sure its a whole and a fraction, not just the fraction!
:D
Answers
Answer:
i alr answered this correctly
Step-by-step explanation:
3 4/5
whats -5( a -6)+2a ?
Answers
Answer:
a is 4 and A is 7
Step-by-step explanation:
Answer:
89443
Step-by-step explanation:
If the radius of the glass container is 2 inches and the height is 3 inches, how much wax will she need to fill the container?
Answers
Answer:
ans is 5 container
Step-by-step explanation:
because 3+2=5
and in my first class is seen the answer
She needs to fill 12 cubic inches of wax in the container.
What is volume?The volume of a thing is the area that it takes up in three dimensions. Simply put, objects occupy space.
Given, the radius of the glass container is 2 inches and height is 3 inches.
To fill the maximum wax in the glass container,
we will find the volume of glass container.
Volume of glass container
= Volume of cylinder.
= π r² h
= π(2)² (3)
= π 4 x 3
= 12π cubic inches.
Therefore, 12 cubic inches of wax she needs to fill.
To learn more about the volume;
https://brainly.com/question/1578538
#SPJ2
Juan works at a health food store
two hours a day, three days a
week. His weekly pay is $73.50.
About how much does Juan make
per hour?
Give me the right answer and I’ll mark your answer the brainliest
Answers
Answer:
12.25 per hour
Step-by-step explanation:
have a great day!
The answer is 12.25.
I'm sure about the answer.
What’s the answer plz help!
Answers
Answer:
40 and 60
Step-by-step explanation:
Find the circumference of the circle use 3.14 for that symbol help ASAP
Answers
Radius of circle =1.5cm
Therefore the circumference of the circle =2x3.14x15= 9.42cm
The answer is 9.42 cm
PHYSICS
12 people are on the elevator to a height of 120 m. The average mass per person is 50 kg. What work does the lift engine do?
Answers
Answer:
720000 J
Step-by-step explanation:
The formula is
Work = Force * Distance
Here we have the weight force, which is calculated as w = m * g
acceleration of gravity (g) ≈ 10 m/s
people's mass (m) = 12 * 50 kg = 600 kg
So Force = 10 m/s * 600 kg = 6000 N
Distance = 120 m
Work = Force * Distance = 6000 N * 120 m = 720000 J = 720 kJ
What is the value of 3x^4?
Answers
Answer:
243
Step-by-step explanation:
[tex]5( \sqrt{ {x}^{2} + 2x - 14} + x) = 20 \\ \\ \sqrt{ {x}^{2} + 2x - 14} + x= \frac{20}{5} \\ \\ \sqrt{ {x}^{2} + 2x - 14} + x= 4 \\ \\ \sqrt{ {x}^{2} + 2x - 14} = 4 - x\\ \\ {(\sqrt{ {x}^{2} + 2x - 14} )}^{2} = {(4 - x)}^{2} \\ \\ \cancel{ {x}^{2}} + 2x - 14 = 16 - 8x + \cancel{ {x}^{2} } \\ \\ 2x - 14 = 16 - 8x \\ \\ 2x + 8x = 16 + 14 \\ \\ 10x = 30 \\ \\ x = \frac{30}{10} \\ \\ x = 3 \\ \\ 3 {x}^{4} = 3 {(3)}^{4} = 3 \times 81 \\ \\ \huge \red {3 {x}^{4}= 243}[/tex]
Please help anyone will give Points
Answers
Answer:
do the base are 3 then times that twice
Step-by-step explanation:
2/8 • 64 = x/64 • 64
128/8 = x
x = 128/8
x = 16
The volume of Figure A is 16 m³.
Hope it helps!
what does 7x^2+12x-3 equal?
Answers
Answer:
23
Step-by-step explanation:
please help. i will give brainliest
the question is in the picture below
A) There is an asymptote at y = 70.
B) The y-intercept is located at (0, 70).
C) There is an asymptote at x = 0.
D) The x-intercept is located at (70, 0).
Answers
Answer:
B. The y-intercept is located at (0,70)
Step-by-step explanation:
This is because 70 is on the y part of table. Hope this helps!
90% of e is 30. What is e?
Answers
Answer:
27
Step-by-step explanation:
Answer:
e = 33.3 (approx. )Step-by-step explanation:
To find out - 'e'
Given,
90 % of e = 30
[tex] = > \frac{90}{100} \times e = 30[/tex]
[tex] = > e = 30 \times \frac{100}{90} [/tex]
[tex] = > e = \frac{100}{3} [/tex]
=> e = 33.3333......
=> e = 33.3 (approx. ) (Ans)
What is the ratio of new books to used books?
15 books 7 of these books are new . The rest of them are used
Answers
Answer:
7 to 8
Step-by-step explanation:
7-15=8
how do i solve these using substitution
Answers
Answer:
Step-by-step explanation:
point form:
(3,4)
equation form:
x= 3, y= 4
Circle D is shown. Line segment F E goes through point D. Line segment C D is shown. Line segment G H goes from one side of the circle to the other side. Line segment A B is outside of the circle and intersects the circle at point B.
In circle D, which is a secant?
EF
DC
Line segment A B
Line G H
Answers
A secant crosses the circle without passing through the center
The secant line is (c) line segment AB
How to determine the secant lineFrom the question, we understand that line segment AB passes through the circle, without passing through the center (i.e. point A) of the circle
This indicates that line segment AB is a secant
Given that the center of the circle is point D
Hence, the secant line is (c) line segment AB
Read more about secants at:
https://brainly.com/question/25871159
Answer:
D. Line GH
Step-by-step explanation: I just did it on edge 2023. Hope this helps!
For what value of n is 20 = {n+4?
a)
b) *
c) 40
d) 60
Answers
Explanation: 20-4=16
What integer values for a and b would make the following statement true?
Answers
Answer:
i think the values for a and b are: a=2 and b=1/4
Find the geometric mean of 6 and 30, write your answer in simplest radical form.
Answers
Answer:
13.4
Step-by-step explanation:
A circular mirror has a diameter of 16.5 inches. What is the circumference of the mirror? Round to the nearest hundredth
Answers
Answer:
C≈51.84in
Step-by-step explanation:
C=2πr
d=2r
Solving for C
C= πd= π·16.5≈51.83628in
Help please and thank you
Answers
Step-by-step explanation:
i think it is the third choice
The predicted costs of an average electric car and an average gasoline car after 2030, are represented by the following tables:
Answers
Answer:
they are both exponential funtions
Step-by-step explanation:
because i got it wrong and im telling you the answer
Answer: Both exponential
Step-by-step explanation:
Khan Academy- answered before and got it right
Another name for a cube is
A. dodecahedron
B. hexahedron
C. icosahedron
D. tetrahedron
please help
Answers
Answer:
B
Step-by-step explanation:
Karen is making 14 different kinds of greeting cards. She is making 12 of each kind. How many greeting is she making.
Answers
Someone please hurry, I have no idea what I am doing
Answers
Answer
61.80°
Step-by-step explanation:
use SOHCAHTOA to solve
by using SOH
sin? = 51/55
? = 1÷sin(51/55)
? = 61.80°
find x=, if x-5=10 HURRY!!!!
Answers
24 students in a class took an algebra test. if 18 students passed, what percent passed.
Answers
Answer:
75%
Step-by-step explanation:
18/24=0.75
Answer:
75%
Step-by-step explanation:
24 divided by 4 is 6, so 25% of 24 is 6. 18 divided by 6 is 3, so 18 out of 24 is 75%.
Last year, Isabel opened an investment account with 6600 . At the end of the year, the amount in the account had decreased by 24.5%. How much is this decrease in dollars? How much money was in her account at the end of last year?
Answers
Answer:
a. $1,617
b. $4,983
Step-by-step explanation:
a. The account suffered a decrease of 24.5% of the original sum of $6,600.
This amount in cash is:
= 24.5% * 6,600
= $1,617
b. If the account reduced by $1,617, the balance left is:
= 6,600 - 1,617
= $4,983