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
shutvik [7]
3 years ago
14

HELP A FELLA OUT Please

Mathematics
1 answer:
Vanyuwa [196]3 years ago
8 0

I'll write "x" instead theta.

sin x + 1 = cos(2x)

formula: cos(2x) = 1 - 2sin²x

sin x + 1 = 1 - 2sin²x

2sin²x + sin x = 0

sin x (2sin x + 1) = 0

sin x = 0 or sin x = -1/2

x1 = πk and x2 = -π/6 + 2πk and

x3 = 5π/6 + 2πk

for domain 0≤x<2π :

x1 = 0 (for k=0 in x1)

x2 = π (for k=1 in x1

x3 = 11π/6 (for k=1 in x2)

x4 = 5π/6 (for k=0 in x3).

k is an integral.

You might be interested in
To control an infection, a doctor recommends that a patient who weighs 92 pounds be given 320 milligrams of antibiotic. If the a
aleksandrvk [35]

Answer: 480 milligrams

Step-by-step explanation:

We can solve this by using direct proportion whereby y = kx

where,

x = patient's weight = 92 pounds

k = constant

y = milligrams of antibiotics = 320

Using y = kx

320 = 92k

k = 320/92

k = 3.4782609

The antibiotic that should be given to a patient who weighs 138 pounds will be:

y = kx

y = 3.4782609 × 138

y = 480 milligrams

The antibiotic that should be given to a patient who weighs 138 pounds is 480 milligrams.

7 0
3 years ago
Read 2 more answers
The statement “cot theta= 12/5, sec theta, and the terminal point determined by theta is in quadrant 2.”
PIT_PIT [208]

Answer: cannot be true because cot∅ is less than zero in quadrant 2.

Step-by-step explanation:

Apex trigonometry answer

7 0
3 years ago
Read 2 more answers
What is all the square numbers that are all greater than 20 but less than 50
Ede4ka [16]

Answer:

25, 36, 49

Step-by-step explanation:

I just listed them down since there aren't many.

1×1=2 (Smaller than 20)

2×2=4 (Smaller than 20)

3×3=9 (Smaller than 20)

4×4=16 (Smaller than 20)

5×5=25

6×6=36

7×7=49

8×8=64 (Bigger than 50)

4 0
3 years ago
An inscribed angle measures 48°; so, the intercepted arc measures 24°. <br> True <br> False
tigry1 [53]

False


The arc is double the inscribed angle.

Arc = 2*48 = 96

4 0
3 years ago
Read 2 more answers
Percy paid $24.10 for a basketball. The price of the basketball was $22.99. What was the sales tax rate? 4.58% 4.80% 4.85%
Ilya [14]
4.58% would be the answer
3 0
4 years ago
Other questions:
  • Consider the graph of function, f, below.
    10·1 answer
  • the seventh-grade class need to earn money for a trip to the amusement park. of the 160 seventh-grade students, 60% participate
    7·2 answers
  • If you are shooting a basketball and take 10 shots and make 3; what percent did you make?
    12·1 answer
  • Please Answer ASAP!!!
    14·2 answers
  • Can someone please help me.understand how to solve this. 78 points if you solve.
    9·1 answer
  • A rectangular box which is open at the top can be made from an12-by-18-inch piece of metal by cutting a square from each corner
    6·1 answer
  • Find the value of x. plz helpp
    5·2 answers
  • How many rooms can be painted using 5 gallons of paint if each room averages 5/6 gallon of paint?
    11·1 answer
  • What is the domain of the relation? On a coordinate plane, a graph of an image has 3 connected lines. The first line goes from (
    14·2 answers
  • Can someone please help me out here? The grading system where I’m from is a,b,c,d,and f . But for some reason I have all L’s on
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!