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
Vikki [24]
3 years ago
6

Factor the trigonometric equation. cos2x-cosx

Mathematics
1 answer:
prisoha [69]3 years ago
4 0

Cos(2x) = cos^2(x) - sin^2(x) - cos(x)

but sin^2(x) = 1 - cos^2(x)

cos(2x) - cos(x) = cos^2(x) - (1 - cos^2(x) ) - cos(x)

cos(2x) - cos(x) = cos^2(x) - 1 + cos^2(x) - cos(x)

cos(2x) - cos(x) = 2cos^2(x) - 1 - cos(x)

cos(2x) - cos(x) = (2cos(x) + 1)(cos(x) - 1)

I think this is what you have asked for.

You might be interested in
Write the equation of the circle with center (5, 1) and radius r = 10
kherson [118]
The standard equation for the circle is:

(x-h)^2+(y-k)^2=r^2, where (h,k) is the center of the circle and r is the radius.

We are given that the center is (5,1) and r=10 so

(x-5)^2+(y-1)^2=100
4 0
3 years ago
What is the slope for 1.(4,9) & (1,6)
Semenov [28]

Step-by-step explanation:

1.(4,9) & (1,6)

m=y²-y¹/x²-x¹

m=6-9/1-4

m=-3/-3

m= 1

2.(5,3) & (5,-9)

m=y²-y¹/x²-x¹

m=(-9)-3/5-5

m=-12/0

3.(2,1) & (8,9)

m=y²-y¹/x²-x¹

m=9-1/8-2

m=8/6

m= 4/3

4.(14,-8) & (7,-6)

m=y²-y¹/x²-x¹

m=(-6)-(-8)/7-14

m=2/-7

m= -2/7

5.(4,-3) & (8,-3)

m=y²-y¹/x²-x¹

m=(-3)-(-3)/8-4

m=0/4

m=0

6.(-11,1) & (-2,6)

m=y²-y¹/x²-x¹

m=6-1/(-2)-(-11)

m=5/9

3 0
3 years ago
Find the length of a rectangular lot with a perimeter of 50 feet if the length is five more than the width.
8_murik_8 [283]

Answer:

should be 10 if L if 5 times the W you just had to do 50/5

Step-by-step explanation:

6 0
3 years ago
I need this please help mee ​
zubka84 [21]

Answer:

A, 120.

Step-by-step explanation:

x-15+75=180

x+60=180

x=120.

3 0
3 years ago
Sonji bought a combination lock that opens with a four-digit number created using the digits 0-9. The same digit cannot be used
Nostrana [21]
I believe the answer would be B
3 0
3 years ago
Read 2 more answers
Other questions:
  • List 3 values that would make this inequality true.4+g>9
    11·2 answers
  • What is the value of x when y = 16? y = 0.25x + 11
    15·2 answers
  • Find the area of this parallelogram. Be sure to include the correct unit in your answer.
    13·1 answer
  • At the yard sale,3\4 of items for sale were toys and 5\6 of the items for sale were books Were there more toys of books for sale
    13·1 answer
  • Elliott has some yarn that she will use to make hats and scarves. Each hat uses 2 yards of yarn and each scarf uses 3 yards of y
    10·1 answer
  • A company purchased​ 10,000 pairs of​ men's slacks for ​$19.36 per pair and marked them up $22.33 What was the selling price of
    10·1 answer
  • If g(x) = 4x + 1 and g(x) = -11, find x.
    5·1 answer
  • Solve for n<br><br>m = -2n-3/kn ​
    12·1 answer
  • Which of the following is another way to express the problem 1 - (-7)? 01-7 0 1+(-7) 0-1 + (-7) 0-1+7​
    15·1 answer
  • HURRY PLS ANSWER NOW!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!