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
Lana71 [14]
3 years ago
11

Solve the equation: Sin2x - Sinx = 0

Mathematics
1 answer:
Viktor [21]3 years ago
5 0
We know that sin2x=2sinxcosx 
(search the net for proof if you wish) 

So the original equation becomes

2sinxcosx-sinx=0
The two terms both have sinx that can be taken out to get: 

sinx(2cosx-1)=0 
This is true if sinx=0 or 2cosx-1=0 , rewritten: cosx=1/2

sinx=0 than x=2kπ
cosx=1/2 than x=π/3+2kπ
where k is an integer

You might be interested in
Alondra says that (12 + 31) × 5 is equivalent to 12 + 31 × 5 because of the associative property. Determine if Alondra is correc
MAXImum [283]

Answer:

No

Step-by-step explanation:

(12 + 31) × 5 = 215

12 + 31 × 5 = 167

order of operations are the rules that state the sequence in which the multiple operations in an expression should be solved.

Order of Operations :

1. Parentheses

2. Exponents

3. Multiplication and Division

4. Addition and Subtraction

7 0
2 years ago
Find the measures of two complementary angles, ÐA and ÐB, if mÐA = (7x + 4)° and mÐB = (4x + 9)°. Measure of angle A = ... Measu
Westkost [7]

Answer:

The measure of angle A is 53 degrees

The measure of angle B is 37 degrees

Step-by-step explanation:

Here in this question, we are interested in calculating the measure of the two angle.

When how angles are complementary, it means the sum of both equals 90 degrees

mathematically ;

(7x + 4) + (4x + 9) = 90

7x + 4x + 4 + 9 = 90

11x + 13 = 90

11x = 90-13

11x = 77

x = 77/11 = 7

The measure of angle A = 7x + 4 = 7(7) + 4 = 49 + 4 = 53 degrees

The measure of B = 4x + 9 = 4(7) + 9 = 28 + 9 = 37 degrees

3 0
3 years ago
9 Calculator What is the median of the data set? 3, 10, 1, 6, 10, 3, 11, 14<br><br><br><br><br>​
Svetradugi [14.3K]

Answer:

1, 3, 3, 6, 10, 10, 11, 14

(6,10)  6+10= 16  

16/2= 8

median is = 8

Step-by-step explanation:

6 0
2 years ago
I need help on .5 and .6
Dovator [93]
5. 44 (forty four)
6. 58
8 0
2 years ago
What is the answer? Please
Oksi-84 [34.3K]

Answer:

2/6 of the book

Step-by-step explanation:

\frac{3}{6}   -  \frac{1}{6}  =  \frac{2}{6}

7 0
2 years ago
Read 2 more answers
Other questions:
  • I'LL MARK BRAINLIEST JUST PLEASE HELP!!!!! A bag is filled with different color balls. Craig selects a ball at random, records t
    5·1 answer
  • Which of the following equations shows direct variation between u and v? Choose all answers that are correct. A. v =1/u + 6 B. v
    5·1 answer
  • When two fair dice are rolled, what is the probability of getting a sum of 7, given that the first die rolled is an odd number?
    13·1 answer
  • 6 = x/4 - 8 <br><br> please help.
    11·2 answers
  • Fill in the blank. A​ _______ variable is a variable that has a single numerical​ value, determined by​ chance, for each outcome
    15·2 answers
  • Wich is longer? A cabinet that is 3/4s foot or a shingle that is 2/3s foot? How much longer?
    5·1 answer
  • If I multiply all whole numbers from 1 through 10 what is the largest power of 4 that is a factor of the product?
    8·1 answer
  • Find the area of the compound shape. Give your answer to 1<br>decimal place...​
    14·1 answer
  • (Please someone help me!) (No links!)
    6·1 answer
  • Judging by appearance, is it reasonable to say that the figures below are similar? How do you know?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!