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
rosijanka [135]
3 years ago
14

How to find cos2theta

Mathematics
2 answers:
horrorfan [7]3 years ago
8 0
These are the double angle formulas. What the other person mentioned above is the sum and difference formula.

SSSSS [86.1K]3 years ago
5 0
You can use the sum and difference identities which for cosine is cos(a+b)= cosacosb-sinasinb
You might be interested in
The number 27 is a perfect cube. 3 times 3 times 3 equals 27. find four other numbers that are perfect cubes and two numbers tha
yKpoI14uk [10]

Answer:

Numbers that aren't: 35 and 43. It can literally be any number.

Perfect cubes: 8,64,125,216. You can find perfect cubes by cubing any number. For example 6^3 (6 to the power of 3) is 216. A perfect cube.

6 0
3 years ago
Read 2 more answers
Write the equation of the line in Point-Slope Form with a slope of 2/3 and
baherus [9]

Answer:

y=2/3+4

Step-by-step explanation:

the formula is y=mx+b. b is 4 and m is your slope.

3 0
2 years ago
Read 2 more answers
Suppose Janice has a beginning bank balance of $467. She makes one ATM withdrawal for $30 and writes 4 checks for $16.80, $22.74
lyudmila [28]

Answer:

xecrdtvfbgyunhmj

Step-by-step explanation:

6 0
3 years ago
What is x? Do not include the degree symbol in your answer.
emmainna [20.7K]

the answer is 56 it

ttgt

5 0
3 years ago
Read 2 more answers
Bella used 2/9 of a paper pack, or 72 pieces. How many pieces of paper were there to start with?
prisoha [69]

Hello!

First, we need to find the unit rate.

72 divided by 2 = 36.

36 x 9 = 324.

There were 324 pieces of paper to start with.

Hope this helps, ~Pooch ♥

6 0
3 years ago
Other questions:
  • The square of a number is 16. Do you know the number?
    5·1 answer
  • Jessica is baking a cake. The recipe says that she has to mix 96 grams of sugar into the flour. Jessica knows that 1 cup of this
    10·2 answers
  • Let f(x) = 9x - 4.5. Find the value of f(2).
    9·2 answers
  • A movie Theater charges $6.50 for morning tickets and $8.75 for night tickets the theater sold 378 tickets for a total amount of
    5·1 answer
  • Which expression is equivalent?
    14·1 answer
  • The slope of the line that passes through the points (-9, 3) and (3, 21) is which of the following?
    7·1 answer
  • Pls help with this question ........
    7·1 answer
  • Giving Brainyest to the person with the correct answer
    7·1 answer
  • sharon mixed meat with potatoes in the ratio 7 : 3 to make 4kg of meat loaf. how much meat did she use
    13·1 answer
  • Find an expression which represents the difference when (2x − 6) is subtracted
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!