solve for x.cos(2x+9)=sin(x)

Answers

Answer 1

Answer:

x=27

Step-by-step explanation:

cos and sin are complementary angles. There theta or x add up to 90 degree. Using the formula.

cos x=sin y where x+y=90 let set up the equation.

[tex] \cos(2x + 9) = \sin(x) [/tex]

[tex]2x + 9 + x = 90[/tex]

[tex]3x + 9 = 90[/tex]

[tex]3x = 81[/tex]

[tex]x = 27[/tex]

To check our identity plug x in the top equation

[tex] \cos(2 \times 27 + 9)) = \sin(27) [/tex]

[tex] \cos(63) = \sin(27) [/tex]

they both equal about 0.45 so it is true.

x=27


Related Questions

If Sin ( x + 3° ) = Cos 40° , find x​

Answers

Here you go :).......’

I need help please ​

Answers

Answer:

358in

Step-by-step explanation:

Use CAH or Cos()=(adj/hyp)

So Cos(36)=(290/h)

Re-Write the equation as h=(290/cos(36)) to get 358 inches

358. Inc
Njhgpfxkzkgskyzkhxohxkyx

What is the measure of angle B in the triangle?

Answers

Answer:

The measure of angle B in the triangle is 22

Step-by-step explanation:

have a nice day !!

Answer:

m∠B= 22°

Step-by-step explanation:

∴ ∠A+∠B+∠C= 180

→ [tex]120+x+(x+16)=180[/tex]

→ [tex]x+x+16=180-120[/tex]

→ [tex]2x=60-16[/tex]

→ [tex]2x=44[/tex]   ⇒ [tex]\frac{44}{2} =22[/tex]

So, m∠x°=22°

[tex]------------[/tex]

hope it helps...

have a great day!!

I NEED HELP ASAP... PLEASE HELP

Answers

The first one is y=6(x-2)^2+4 and the second one is y=-3/2(x+6)^2+4

Find 3/7 of 1/5. A 4/12. B 3/35 C 8/35 D 22/35

Answers

Answer:

c

Step-by-step explanation:

What is the circumference of a circle with a diameter of 2 feet? Use 3.14 for
T.

Answers

Answer:

your answer will be option A. 6.28

Step-by-step explanation:

C=3.14 x 2

C=6.28

hope it helps

Please I need help from anyone :(

Answers

2=8X

Step-by-step explanation:

I got this online XD

PLEASSEE HELPPPP HURRRY FIND THE SURFACE AREA HURRRYY

Answers

Answer:

The answer is 48.9 cm^2.

Step-by-step explanation:

Let's find the surface areas of the faces other than the base;

triangle area: b x h / 2

4 x 7 = 28, 28/2 = 14

in this case, there are three faces, so 14 x 3 = 42, and we add that with the base to get 48.9

:) hope this helps!

Answer:

yes

Step-by-step explanation:

WILL GIVE BRAINLIEST! NEED FAST!
A clinical trial on a new weight loss pill was conducted on 1000 people who weighed between 200 and 210 pounds. If 650 people lost more than 15 pounds in 1 year, which equation can be used as a first step to determine the percent of people in the clinical trial who lost more than 15 pounds in one year?

Answers

Answer:

650=65% of 1000

Step-by-step explanation:

650-600=65 or 65%

A circle has the equation
(x-2)2 + (y+4)2 = 169. Which of the following is NOT a point on the circle?
a. (2,9)
b. (-10,1)
c. (-11,-4)
d. (5,12)

Answers

Answer:

d

Step-by-step explanation:

What kind of angles are 1 and 5 in the picture below?

Answers

Answer:

i guess the two numbers were obtuse angles

Angle 1 and angle 5 are corresponding angles.

What are the corresponding angles?

When two parallel lines are crossed by another line, comparable angles are the angles that are created in matching corners or corresponding corners with the transversal (i.e. the transversal).

Given:

Two lines cut by line t.

And lines are not parallel.

So, angle 1 and angle 5 are corresponding angles.

Therefore, corresponding angles is the required statement.

To learn more about the corresponding angles;

https://brainly.com/question/29147125

#SPJ6

A hawk takes flight from a mountain peak and flies 800 meters west. Then it takes a turn and flies 200 meters south. What is the distance and direction of the hawk from the mountain peak?

Answers

Answer:

the hawk has flow 824.62 meters southwest of the mountain peak.

Step-by-step explanation:

In order to find the distance we need to use the Pythagoras theorem

d^2 = 800^2 + 200^2

d= 824.6 m

we can find the direction by using the eq for a tangent

he opposite side is 200 m and the adjacent side is 800m

tan theta = opposite / adjacent

theta = arc tan (800/200)

The hawk is at a distance of 824.6m flying at an angle 76 degrees NE of the mountain peak.

The final location will be southwest of the mountain peek.

a2+b2=c2

a = 200

b= 800

c = √(2002+8002) = 824.62

So the hawk has flow 824.62 meters southwest of the mountain peak.

brainliest for correct answer​

Answers

Answer:

m=2

Step-by-step explanation:

(0,-4) -> (0,4)

(1,-2) -> (-1, 2)

2-4/-1-0

m= -2/-1

m= 2

PLZ HELP ME!!!
::::::::::::::::::::::::::::::

Answers

Answer:

-2

Step-by-step explanation:

-3 -1 / 7-5 = -4/2 = -2

4 is 7/10

hope this helps

ANSWER = Negative TWO

Can someone help me with this? It’s dues tomorrow this is for science but there’s no science

Answers

Answer:

Sorry, I can't see what your question is.

Step-by-step explanation:

Add the polynomials. Be sure to write your answer in standard form. (−4x3−5x+2)+(4x3+10)

Answers

-5x+12 is the answer

Need 1- 5 done by 7 hours if you can’t do them at least do one and show me how you got the answer thank you :)

Answers

Answer:

For #5: There are 3 children and 4 adults.

Step-by-step explanation:

Let x= number of children

y= number of adults

y = x + 1

x + y = 7

x + (x+1) = 7

x + x + 1 = 7

2x + 1 = 7

2x = 7 - 1

2x = 6

x = 6/2

x = 3

y = x + 1

y = 3 + 1

y = 4

Therefore, the number of children is 3 and the adults are 4.

FIND VALUE OF SLOPE PLEASE:)

Answers

I can’t see the picture that good do you have another one ?

Answer:

1(rise)/-1(run)  answer = -1

Step-by-step explanation

hope that helped

Jet had $63 to spend at Pet Smart. She spent 2/7 of her money on dog bones and the rest on squeaky toys to destroy. How much money she spend on the squeaky toys? (Just type the answer with the proper label, no complete sentence needed).

Answers

Answer:

She spent 45 dollars on squeaky toys.

Step-by-step explanation:

If we divide 63 by 7 we would get 9, then if we multiply that number by 2 for the bones, we are left with 5/7, finally if we multiply the 5 by 9 you would get 45, or 45 dollars.

pls help me plesa eimportant so important thank!~

Answers

Answer:

R'(40, -8)

A'(-16, 32)

T'(48, 24)

Step-by-step explanation:

For this question, simple multiply all the points by 8.

A factory makes rods by cutting plastic pipes that are 5 feet long into 13 rods. How long is each rod? I NEED IT NOWW

Answers

Answer:

0.3846 feets

Step-by-step explanation:

Given that :

Full length of rod = 5 feets

Number of equal length rod cut from full length rod = 13

Length of each rod cut :

Full length of rod / number of equal length rod cut

5 feets / 13

= 0.3846 feets

Question is in the picture

Answers

Reflection over the y-axis, translation 2 units down

Answer:

The answer is option B, reflected over the y-axis and translated 2 units down.

? * 2/3 = 1

1÷ 2/3 = ?

Answers

Answer:

-9

Step-by-step explanation:

becuase 5/8/6=-9

hi! i am really confused on this and need answers fast thank you for helping me :) (get full points too)

Answers

Answer:

your answer will be 172.8m³

Step-by-step explanation:

have a nice day!!!

Answer: 22 m

Step-by-step explanation:

I think it's 22 but not sure though.

Please help me with this just type in the answers that apply

Answers

Answer:

All answers could be B, C and D

Step-by-step explanation:

According to the triangle inequality theorem, the combined length of two sides of a triangle cannot exceed the length of the third side. so:

13+8=21

Which means the sides that are less are A, B, C and D

Now A is smaller terms, if we try to use this to apply to a different way:

8+5=13

13=13

This means that the combined terms are NOT as small as the third side, and therefore this length cannot work. Therefore, the only ones left are lengths B, C and D

What is the exact volume of the cylinder?
A 32m in
B 64m in
C 123m in
D 512m in

Answers

the answer is 128. you do 4^2 x 8

Answer:

I think the answer is A

Step-by-step explanation:

8x4=32

then A says 32xpi

Which equation represents a line that is perpendicular to the line shown in the graph? (-5,6) (5,2)

Answers

Answer:

Y=5/2x-3

Step-by-step explanation:

The equation's slope is -4/10, which simplifies to -2/5. The reciprical of this, 5/2, is the slope of a perpendicular line. The first possibility you commented is the only one to have this slope.

PLEASE ANSWER THIS IF YOU KNOW IT!! AND HURRY!!​

Answers

Answer:

The shorter leg, s, is the geometric mean between h and m

The longer leg, b, is the geometric mean between h and n

Step-by-step explanation:

By the right triangle geometric mean theorem, we have;

The altitude of a right triangle, 'h', which intersects with the hypotenuse side of the right triangle at a point such that it creates two segments, 'a' and 'b' on the hypotenuse side , then we have;

h = √(a·b)

Therefore, we have;

Description      [tex]{}[/tex]                                                                                 Proportion

The altitude of ΔAYES is the geometric mean between m and n   [tex]\dfrac{m}{a} =\dfrac{a}{n}[/tex]

a² = m·n → a = √(m·n)

The shorter leg, s, is the geometric mean between h and m   [tex]\dfrac{m}{s} =\dfrac{s}{h}[/tex]

s² = m·h → s = √(m·h)

The longer leg, b, is the geometric mean between h and n   [tex]\dfrac{n}{b} =\dfrac{b}{h}[/tex]

b² = n·h → s = √(n·h)

This relation is linear. {2,-3), (4, -2), (-2,5), (0,4)}
true
false

Answers

Answer:

tru

Step-by-step explanation:

what is this answer -2+7(-4)

Answers

Answer:

= -30

Step-by-step explanation:

−2+(7)(−4)

=−2+−28

=−30

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