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
lyudmila [28]
3 years ago
14

Find all solutions for the following equations. Write your answers in radians using exact values. (Enter your answers as a comma

-separated list. Let k be any integer.) sin 2x cos x cos 2x sin x
Mathematics
1 answer:
sasho [114]3 years ago
5 0

Answer:

Step-by-step explanation:

Given that:

sin2xcos x + cos2xsin x = -1

Recall that;

SInAcosB + cosASinB = SIn (A+B)

SIn (2x +x) = -1

Sin (3x) = -1

x = \bigg [\dfrac{Sin ^{-1} (-1)}{3}  \bigg ]

x = \dfrac{\pi}{2} + \dfrac{2 \pi \ k}{3}

x = \dfrac{\pi}{2}, \dfrac{7 \pi}{6}, \dfrac{11 \pi}{6}

You might be interested in
Which expression is equivalent to x6 – 9?
Cerrena [4.2K]

Answer:

12-9

Step-by-step explanation:

If 'x' value is 2

Then x*6 - 9

Then x*6 = 12

Then x*6-9 = 12-9

5 0
3 years ago
Derek owns a landscape business. He charges a fixed fee of $30 plus $1 per 1,000 square feet of lawn mowed. Derek's earnings (in
fgiga [73]
Let f(x) represents function that tells us Derek's earning depending on square feet of lawn mowed which is x.

First we construct function:

f(x) = x/1000 * 1 + 30

x/1000 is a number that tells us the number of mowed units. for x = 1000 square feet he earns 1 dollar that is why we have to divide x by 1000.

if he earned 204 first week that means that x =:
204 = x/1000 + 30
x/1000 = 174
x = 174 000
if we check for each week that he worked we will see that square footage of the lawns he mowed match forth (last) option.

Answer is D.
8 0
3 years ago
Read 2 more answers
Value of X and Y please
morpeh [17]
X is 180 - 30 = 150, 

The sum of the sides of a polygon is the (number of sides - 2) * (180) so the total interior angle measure of the right polygon is 360.

360 = 80 + 90 + 150 + y

x = 150
y = 40
8 0
3 years ago
How many unique roots are possible in a seventh-degree polynomial
andreev551 [17]

Answer:

A. 7

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
How do you find the area of a triangle?
OLga [1]
A= 1/2 of base times height
7 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP ASAP!!
    12·1 answer
  • Exam 03.01 the Pythagorean theorem
    5·1 answer
  • How long does it take to eat one hotdog
    9·2 answers
  • How long does it take to drive 125 miles at 65 mph?
    8·1 answer
  • If the speed of the ball at the bottom of the circle is v, what is the expression for the centripetal force on the ball in terms
    8·1 answer
  • Find the midpoint of the line segment defined by the points: (5, 4) and (−2, 1) (2.5, 1.5) (3.5, 2.5) (1.5, 2.5) (3.5, 1.5)
    7·1 answer
  • A. It is not possible to determine if the triangles are congruent
    15·1 answer
  • Part b c and d please help
    8·1 answer
  • HELP PLEASE<br><br> Solve 3 + 4x &gt; –5 for x.
    7·2 answers
  • Which of the following statements correctly illustrate the addition property of equality?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!