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
olya-2409 [2.1K]
3 years ago
13

Which trigonometric functions are equivalent to cos ∅. There must be only 2 selections no more no less !

Mathematics
1 answer:
oksian1 [2.3K]3 years ago
5 0

Answer:

cos(theta+2π) and -cos(-theta)

Step-by-step explanation:

theta plus 2π have the same cosine output as theta on a graph.

the negative cosine of negative theta is equal to the positive cosine of positive theta.

You might be interested in
Given z1 and z2 below. Calculate z1/z2 and write your answer in rcistheta form.
andre [41]

Answer:

  (2/9)cis(30°)

Step-by-step explanation:

We can express the two numbers in magnitude∠angle form, then find their ratio.

  |z1| = 3√((-1)² +(√3)²) = 3√4 = 6

  ∠z1 = arctan((3√3)/(-3)) = -arctan(√3) = 120°

  z2 = 27∠90°

So, the ratio is ...

  z1/z2 = (6∠120°)/(27∠90°) = (6/27)∠(120°-90°)

  z1/z2 = (2/9)∠30°

8 0
2 years ago
Calculate the area of the irregular polygon shown below:
MAXImum [283]
That's the diagram..
(12×3) + 3(0.67×7) = 50.07inches²
≈ 50inches²

hope this helps
make it the brainliest if it's correct....

5 0
3 years ago
The price of a cup of coffee has risen to $2.40 today. Yesterday's price was $2.15. Find the percentage increase. Round your ans
grigory [225]

Answer:

11.6%

Step-by-step explanation:

(new - old)/(old) = 25/215 = .116 = 11.6%

7 0
3 years ago
What is the answer for x because i got x/2- 5=4
Firlakuza [10]

Answer:

x/2=5+4=9

x=9*2=18

x=18!

8 0
3 years ago
At a restaurant you only have 20 dollars to spend on dinner. in addition to the cost of the meal you must pay only 5% sales tax
wlad13 [49]
$16.68 is the most expensive item you can order with $20.00
7 0
2 years ago
Other questions:
  • What is this<br> 8x+17=2x+35
    9·1 answer
  • You work at a coffee shop.a drink on the menu needs 1/3 cup of milk .You only have 5/6 cup of milk. How many of this drink can u
    9·1 answer
  • The United States Postal Service charges a
    11·1 answer
  • Two angles form a linear pair. The measure of one angle is 24º more than the measure of the other angle. Find the measure of eac
    9·1 answer
  • Y=x+1<br> y+x=5<br> Cant figure out what i am suppose to do with this problem
    11·1 answer
  • What is the solution of 3|x – 5| + 2 = 20?
    10·2 answers
  • If a 20-foot tree casts a 40-foot shadow, how tall is a tree that casts a 48-foot shadow?
    11·1 answer
  • Use what you know about the angle sum theorem for triangles and your algebra skills to solve for x and find the measure of all t
    15·1 answer
  • Yasmien wants to give her friends 3/4 of a banana cake in her birthday party .She was able to bake 12 banana cake.How many peopl
    11·1 answer
  • It’s a test please help me
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!