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
gogolik [260]
3 years ago
9

Use the cosine double-angle identity cos(2θ) = 2cos^2θ-1 to derive an identity for cos^2θ

Mathematics
1 answer:
lianna [129]3 years ago
4 0

Step-by-step explanation:

The cosine double angle formula tells us that cos(²θ) is always equal to cos²θ- sin²θ. For example cos(60) = cos²(30) - sin² (30). We can use this identity to rewrite expressions or solve problems

You might be interested in
You toss 3 coins. What is the probability that you get exactly 3 heads, given that you get at least one tail? A tree diagram wil
Leviafan [203]
Out of 3 coins, if you are given that 1 is on tails, then the most heads you could have is 3 coins - 1 tails = 2 heads.

The probability of getting 3 heads would be 0.
7 0
4 years ago
4 times the measure of the complement of an angle is equal to 2/3 the measure of the original angles supplement. what is the mea
Irina-Kira [14]
Let angle be x 
4 times complement = 4(90 - x)
2/3 times its supplement = 2/3(180 - x)

4(90 - x) = 2/3 (180 - x)
360 - 4x = 120 - 2/3 x
240 =  3 1/3 x
x =  240  /  10/3  = 240 * 3/10  = 72 degrees Answer
4 0
4 years ago
Henge
stiks02 [169]

Answer:

$356.78

Step-by-step explanation:

$178.39 * 2

3 0
3 years ago
Heeeeey can i get some help here?
Elenna [48]
1. 1.09392(10^5)
2. 1.1130(10^4)
hope this helps
3 0
3 years ago
Write an equivalent ratio for 3 pack of Clorox wipes : $9.99
Brums [2.3K]

Answer:c

dfgtymyutresfrthyhn

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • A number b added to 10 is no more than -2
    11·1 answer
  • What is 16.666666667 rounded to the nearest tenth
    8·2 answers
  • If using the method of completing the square to solve the quadratic equation
    7·1 answer
  • F(t)=3t^2-2 , find f(k-2)
    15·1 answer
  • What is 34.14 in expanded form
    8·2 answers
  • What interest rate would you need to get if you want $10,000 to grow to $25,000 in just 4 years assuming it is simple interest g
    5·1 answer
  • Can you help?
    15·2 answers
  • Solve for X. This is geometry I really need help please please.
    12·1 answer
  • Find the value of x<br><br> Please
    13·1 answer
  • Will give Brainiest
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!