Giải phương trình:
sin*2x+sinxx.cox=1/2

Answers

Answer 1

Answer:

x = 9.47 degrees  ( in first quadrant.

Step-by-step explanation:

sin2x + sinx cos x = 1/2

Now sinx cos x = 1/2sin2x so:

3/2sin2x = 1/2

sin2x = 1/2 / 3/2

sin2x = 1/2 * 2/3 = 1/3

2x = arcsin 1/3 = 19.47 degrees

x = 9.74 degrees to nearest hundredth.


Related Questions

Find the unit rate. Round to the nearest hundredth, if necessary,
$2.99 for 15 lb
The unit rate is $
Иb.

Answers

Answer:

$0.20/lb

Step-by-step explanation:

2.99/15 = 199333

.20/lb

A car is traveling at 40 ​mi/hour. What is the​ car's speed in feet per​ second?

Answers

Answer:

58.8 feet per second

Step-by-step explanation:

At 40 miles per hour, you are traveling 58.8 feet per second. To convert miles per hour to feet per second, multiply the miles per hour figure by 1.47. There are 5280 Feet in a mile and 3600 Seconds in an hour. If you divide 5280 Feet by 3600 Seconds (5280 FT /3600 SEC.), you get 1.47.

Hope that helps :)

In may, Ana made one deposit of $200 to her savings account and made 3 withdrawals of $50 each. How much money did she have in her account at the end of may?
Make an equation with integer and than answer:

Answers

Answer:

the answer would be 50 left in her bank account

PLEASE HELP!
Heather invest $3377 in a retirement account with a fixed annual interest rate of 8% compounded two times per year .how long will it take for the countdowns to reach $14,989.87?
round to the nearest whole year.

Answers

It will take 19 years for the countdowns to reach $ 14,989.87

Given that Heather invest $ 3377 in a retirement account with a fixed annual interest rate of 8% compounded two times per year, to determine how long will it take for the countdowns to reach $ 14,989.87 the following calculation must be performed:

Initial value x (1 + interest rate / compounding times) ^ (years x compounding times) = Compound interest

3377 x (1 + 0.08 / 2) ^ 2X = 14,989.87 3377 x 1.04 ^ 2X = 14,989.87 3512.08 ^ 2X = 14,989.87 X = 19

Therefore, it will take 19 years for the countdowns to reach $ 14,989.87.

Learn more in https://brainly.com/question/14295570


5
an
The distance between two cities on a map is 3.5 centimeters. The map uses a scale in which 1
centimeter represents 20 kilometers. What is the actual distance between these two cities in
kilometers? hi

Answers

Answer:

(0,2),(1,6),(−2,−6) are solutions

i NEED A CORRECT ANSWER please nobody Has been helping me for 2 hour Like this website is only for questions and answer but nobody even does a answer for my questions even when i answer there's like im annoyed

Answers

For the first picture:

GR = 32

AK = 18

EA = 21

GA = 19

GS = 38

I'm not very good with questions like the ones in the second and third picture, so I won't attempt them. I hope this can help you a little bit, though. Good luck !! :)

If you scale up the ratio on the left, what will you get for the unknown quantity on the right? $155 $465

-------- = --------------

20 hours ?


A. 10 HOURS

B. 40 HOURS

C. 60 HOURS

D. 100 HOURS

Answers

Answer:

60 minute equals to 1 hour

Answer the question below

Answers

Answer:

box A.

Step-by-step explanation:

im not really sure

Answer:

BOX A

Step-by-step explanation:

The more of something there is, the more heavier it is.

Graph a line that contains the point (-6,1) and has a slope of 5.

Answers

Answer:

Link: https://www.numerade.com/ask/question/graph-a-line-that-contains-the-point-61-and-has-a-slope-of-5-05016/

Step-by-step explanation:

Answer: find -6 on x or y axes then 1 on x or y axes then diagonal by five and count each spot.

Step-by-step explanation:find the -6 on what the question asked -6 x or y axes then 1 should be on the opposite axes then go diagonal by five and count each spot.

What is a solution to this mathematical equation?

3.76 x 4.64 = x

x= ???

Answers

Answer:

x= 17.4464

Step-by-step explanation:

1) Multiply the numbers

3.76 · 4.64 = x

17.4464 = x

2) Move the variable to the left

17.4464 = x

x = 17.4464

Step-by-step explanation:

you don't have a calculator ? even your computer or your smart phone have calculator apps.

just type it in : 3.76 × 4.64

and the result is : 17.4464 = x

Which of the following describes distributive property? *

12 + 10 = 22
12 + 10 = 10 + 12
5( 7 + 4) = 35 + 20
5( 7 + 4) = 35 + 5

Answers

deu ruim  aqui pq eu não sei

Step-by-step explanation:

Algebraically Speaking Write an equation: Rita has $5 in her purse. This is $12 less than she had before she went shopping. How much did she have when she went to the mall?.​

Answers

-$12 -$5= x

x = value Rita has left when she went to the mall

Find the missing exponent.
(b^2) =b^-8

Answers

Answer:

b=-1

Step-by-step explanation:

3x = 1/9 what is x
Please respond quick

Answers

X=1/27 decimal form=0.037 repeating

1 pint=how many cups

Answers

Answer:

2

Step-by-step explanation:

.

Help with middle one pls

Answers

Answer:

15 times 3 is equal to45

Rewrite 5/12 and 3/4 so they have a common denominator

Answers

Answer:

5/12 = 5/12

3/4 = 9/12

Step-by-step explanation:

The common denominator is 12.

5/12 is already in the common form.

3/4= 3*3 / (4 * 3) = 9/12

Solve.
Ms. Holmstrom set up a math problem to find out how much money her class spends for lunches at the cafeteria for over a 2-day period. On Monday, 14 students bought lunches in the cafeteria, and 16 students bought lunches on Thursday. If lunches cost $2.50 each, how much money has Ms. Holmstrom's class spent?

Answers

Answer:

They have spent $75

16+14 = 30

30 x 2.50 = 75

Step-by-step explanation:

Tonya's mom gave her $15.00 to spend on a Saturday outing with her friends. She spent $8.50 going to a movie. How much money does she have left to spend on lunch?​

Answers

Step-by-step explanation:

please mark me as brainlest

Which of the following makes sense as an answer to 8.9 *7.15

Answers

Answer:

so whats the answer

Step-by-step explanation:

Zachary purchased a new car for $29,995. The value of the car linearly depreciated to $9,300 over 10 years. Write a linear equation to represent the value y of Zachary's car (in dollars) after x years since its purchase.

Answers

Answer:

Step-by-step explanation:

y=-1,869.5x+27,995

Step-by-step explanation:

Let

x-----> the time in years

y----> value of Zachary’s car in dollars

A(0,27,995), B(10,9,300)

step 1

Calculate the slope

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

substitute

m=\frac{9,300-27,995}{10-0}=-1,869.50

step 2

Find the equation of the line

The equation of the line into slope intercept form is equal to

y=mx+b

we have

m=-1,869.50

b=27,995  -----> the y-intercept is the point A

substitute

y=-1,869.5x+27,995

hope this helps have a good day

What is the y-intercept of the line shown below? Enter your answer as a coordinate pair.

Answers

Answer:

The x intercept is (-2,0)

the y intercept is (0,4)

the standard form of "three thousand four hundred eight."

Answers

Answer:

3,408

Step-by-step explanation:

Answer:

3,408 is the forms of three thousand four hundred eight

Monica’s dog weighed nineteen and four hundred fifteen
thousandth pounds. How do you write this number in decimal
form?

Answers

Answer:

19.0415

Step-by-step explanation:

Answer:

19.0415

Step-by-step explanation:

ASAP!!!!Batman's age is 4 more than twice Robin's age when you add batman's age to Robin's age you get 58 how old is Batman and robin a.use x represent Robin's age write an equation that represents the situation b.solve the equation from part (a).show your work state your solution as a complete sentence.​

Answers

Answer:

56is shjdns djdndjsndnskdvdjdnshdkd

Order these numbers from the least to the greatest. 7.618, 7.681, 7.6801, 7.0681

Answers

Answer:

7.0681, 7.618, 7.6801, 7.681

Step-by-step explanation:

from the least (smallest) to the greatest (largest)

7.0681, 7.618, 7.6801, 7.681

Find the slope of the line that passes through the following points: 5,10.5 25,12.5

Answers

the slope is 1/10

y2 - y1 / x2 - x1

Find the linear correlation coefficient for the table below. Keep 4 numbers AFTER the decimal
х
у
1
5
3
7
1.5 6
0
1
5
9
10 10
5
8
11
12
15 20

Answers

Answer:

no answer sorry I only study in class 7

PLEASE ANSWER QUICKLY!!!
Which object models a line?
A. wall
B. television
C. fly
D. meter stick

Answers

Step-by-step explanation:

D meter stick

Hi please help quick! what's -2 5/11 - 7 1/11

Answers

Answer:

Your answer will be -9.54545454545

Explanation:

I don't really understand what just happened to my calculator but i searched on goo gle but it's the correct answer..

Hope it helps you..Y-your welcome in advance..

(;ŏ﹏ŏ)(ㆁωㆁ)

-9 6/11 Since they are both negative you need to add them together. -2-7=-9
-5/11-1/11=-6/11
The answer is -9 6/11
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