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
NISA [10]
3 years ago
10

Solve sint = cos2t, for –4π ≤ t ≤ –2π

Mathematics
1 answer:
e-lub [12.9K]3 years ago
3 0

Answer:

-(23/6)π

-(19/6)π

-3π

Step-by-step explanation:

cos2t=cos^2t-sin^2t => cos^2t=1-sin^2t =>cos2t=1-2sin^2t

sint=1-2sin^2t, if x=sint, thenn we have 2x^2+x-1=0

Here x=0.5, x=-1, as x=sint => sint = -1 solutions for -4π to -2π is t=-3π,

sint = 0.5 solutions for -4π to -2π is t= -(23/6)*π, and t = -(19/6)*π

You might be interested in
What is 9+10 plz show work <br> the right one will get brainly
Ray Of Light [21]

Answer: 9 + 10 = 19

Step-by-step explanation: 9+ 0 =9

and 1+0 = 1

put those together and you get 19

4 0
2 years ago
Mrs. Taylor is making new foot all uniforms for Friday nights homecoming game. The trim for the sleeves of one uniforms requires
scoundrel [369]

The yards of fabric needed is 45.50 yards.

<h3>How many yards of fabric is needed?</h3>

The first step is to determine the total inches of fabric that would be needed for 63 uniforms. The mathematical operation that would be used to determine this value is multiplication.

Multiplication is the process of determining the product of two or more numbers. The sign used to denote multiplication is ×.

Fabric needed for 63 uniforms = inches needed for one uniform x total number of uniforms

63 x 26 = 1,638 inches

The second step is to convert inches to yards

1 inch = 1/36 yards

1638 / 36 = 45.50 yards

Here is the complete question:

Mrs. Taylor is making new football uniforms for Fridays nights homecoming game. The trim for the sleeves of one uniform requires 26 inches of fabric. Mrs Taylor needs to make 63 uniforms total. How many yards of fabric should she buy?

To learn more about multiplication, please check: brainly.com/question/3385014

#SPJ1

3 0
1 year ago
Steve is turning half of his backyard into a chicken pen. His backyard is a 24 meter by 45 meter rectangle. He wants to put a ch
anygoal [31]

Answer:

51m

Step-by-step explanation:

For this equation, you want to use pythagoras' theorem (or pythagorean theorem) to work out the hypotenuse (diagonal line)

The formula for this is a²+b²=c², where c is the hypotenuse.

We can sub in the 2 sides for a and b, turning the equation into 24²+45²=c².

Working out the squares gives 576+2025=c², which can be solved to c²=2601.

To get c, we must square root both sides, which results in c=51m.

**This question involves pythagoras' theorem, which you may wish to revise. I'm always happy to help!

4 0
2 years ago
Complete the table. Will choose brainliest.
TEA [102]

Answer:

At starting percentage without tusk is 2.4% and with tusk is 97.6%.At end percentage without tusk is 14.6% and with tusk is 85.3%

4 0
2 years ago
Select all the equations where y=10y=10y, equal, 10 is a solution.
vekshin1

Answer:

e. po sna makatulong pa heart nalang po salamat

4 0
2 years ago
Other questions:
  • In order to solve the following system of equations by subtraction, which of
    8·1 answer
  • What is -5 5/8 + 3 1/2?
    15·1 answer
  • Find the volume of the prism. PLS HELP
    15·2 answers
  • Solve for the perimeter and area of a rectangle that has a length of 4in. and a width of 2 in
    12·2 answers
  • Someone please explain to me how to do this ‼️
    10·1 answer
  • The gcf of 8 and 3<br>prease​
    9·2 answers
  • Please help, I will give Brainliest!
    13·2 answers
  • Find the area of the shape shown below.
    6·1 answer
  • 1. A=6b<br> 2. A=12b<br> 3. A=(6b)/2<br> 4. A=(6+b)/2
    11·1 answer
  • Two cards are drawn from a well-shuffled deck of 52 playing cards. Let X denote the number of aces drawn. Find P(X = 1).
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!