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
iren [92.7K]
3 years ago
7

Find the real zeros of the trigonometric function on the interval 0 ≤ x < 2π

Mathematics
2 answers:
Luda [366]3 years ago
6 0
4cos2(x)−3=0

or 
4cos2(x)=3

cos(x)= √3/2

π/6, 5π/6,  7π/6,  11π/6



Romashka-Z-Leto [24]3 years ago
5 0
F(x) = 4 [cos (x)]^2 - 3 = 0

4[cos(x)]^2 = 3

cos(x) = √3 / 2

That happens in the first and fourth quadrants, for the angles 30 degrees and 330 degrees.

Answer: x = 30 degrees and x = 330 degrees
You might be interested in
Newton’s law of cooling states that the temperature of an object changes at a rate proportionalto the difference between the tem
Verizon [17]

Answer:

\frac{dT}{dt} = -0.05\;min^{-1}  (T-70\ºF)

Step-by-step explanation:

Hi!

Lets call:

T = temprature of the object

T₀ = temperature of surroundings

t = time

The rate of change of T is its derivative with respecto to time. If T > T₀, the object looses heat, so T decreases. Then, being k > 0:

\frac{dT}{dt} = -k(T-T_0) \\

In this case T₀ = 70ºF and k = 0.05/min. Then the differential equation is:

\frac{dT}{dt} = -0.05\;min^{-1}  (T-70\ºF)

3 0
3 years ago
Plz guyss helpp;(<br><br> The question is above
IceJOKER [234]

Answer:

40

Step-by-step explanation:

The frequency column gives the number of houses in the sample, then

number of houses = 5 + 11 + 23 + 1 = 40

7 0
2 years ago
Help!!!!PLEASE &amp; THANKS
kiruha [24]

x° = 25°

25° is the answer

7 0
2 years ago
Edna earns $6 for each hour of yard work. How many hours in all will it take Edna to earn<br> $42?
madreJ [45]

Answer:

42 divided by 6=7 so 7 hrs

Step-by-step explanation:

its probalay wrong im not smart lol

5 0
2 years ago
Read 2 more answers
A school wants to buy a chalkboard that measures 1 yard by 2 yards. The chalkboard costs $71.00 per square yard. How much will t
KengaRu [80]

Answer:

142

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Suppose the u.s. president wants to form a special panel to study the national energy crisis and make recommendations. he will p
    14·1 answer
  • Of the 200 students surveyed in 5th grade, 120 prefer banana and 80 prefer apples what is the part to part ratio
    7·1 answer
  • The length of a rectangle is stored in a double variable named length, the width in one named width. write an expression whose v
    8·1 answer
  • A shuttle service charges each customer $10.00 for a ride from the airport
    15·1 answer
  • Write 26% as a decimal.
    13·1 answer
  • What is the simplified form of (x+3/x^2-x-12)•(x-4/x^2-8x+16)
    8·1 answer
  • Someone please help me with this soon.
    5·1 answer
  • Rate this 1-10
    14·2 answers
  • Pleaseee help with math 6th
    11·1 answer
  • What is one tip the text gives for taking care of the brain?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!