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
pentagon [3]
3 years ago
7

Cos2x + sin2 x =______

Mathematics
1 answer:
Alenkasestr [34]3 years ago
8 0
Cos²(x) + sin²(x)
¹/₂[1 - cos(2x)] + ¹/₂[1 + cos(2x)]
[¹/₂ - ¹/₂cos(2x)] + [¹/₂ + ¹/₂cos(2x)]
¹/₂ + ¹/₂ - ¹/₂cos(2x) + ¹/₂cos(2x)
1
You might be interested in
A candle has been burning for 20 min and is now 25 cm tall. In an hour it will be 10 cm tall. Which equation models the height y
stiv31 [10]

Answer:

(y - 25) = - 0.25(x - 20)

Step-by-step explanation:

Given that :

Height of candle after burning for 20 minutes = 25 cm

Height after burning for 1 hr (60 minutes) = 10 cm

Height (y) in cm of candle x minutes after being lit:

Using the equation :

(y - y1) = m(x - x1)

m = (change in y / change in x)

Change in height within 60 minutes :

Height at 20 minutes = 25cm

Height after an hour = 10

Change in height per hour = (25 - 10) = 15cm

Hence, m = change in height per minute

15cm / 60 = 0.25cm ( - 0.25) (decrease in height)

y1 = 25 ; x1 = 20

(y - y1) = m(x - x1)

(y - 25) = - 0.25(x - 20)

4 0
2 years ago
If you have a demand function of Qd=48-9P and a supply function of Qs=-12+6P,
jenyasd209 [6]

Answer:

The equilibrium quantity is 26.4

Step-by-step explanation:

Given

Q_d = 48 - 9P

Q_s = 12 + 6P

Required

Determine the equilibrium quantity

First, we need to determine the equilibrium by equating Qd to Qs

i.e.

Q_d = Q_s

This gives:

48 -9P = 12 + 6P

Collect Like Terms

-9P - 6P = 12 - 48

-15P = -36

Solve for P

P = \frac{-36}{-15}

P =2.4

This is the equilibrium price.

Substitute 2.4 for P in any of the quantity functions to give the equilibrium quantity:

Q_d = 48 - 9P

Q_d = 48 - 9 * 2.4

Q_d = 26.4

<em>Hence, the equilibrium quantity is 26.4</em>

7 0
3 years ago
The science fair judges will be science teachers. Each judge will only have time to view 5 science fair projects. There are 133
Whitepunk [10]
There will need to 27 science teachers
5 0
3 years ago
Help please due today.
yan [13]

Answer:

I think its 2nd one

HOPE IT HELPS, BE SAFE! Brainiest if possible pls! :)

7 0
2 years ago
What is the value of a good credit report to a borrower? A. A good credit report allows the borrower to spend as much as they wa
Alecsey [184]
I think all of the above apply 
5 0
3 years ago
Other questions:
  • X is at least 5 and at most 10
    12·1 answer
  • a pool in the shape of rectangle has a perimeter of 80 feet. The pool is 8 Feet less wide than its long. Find the length and wid
    8·1 answer
  • What was the names of Jupiter’s big pet dog?
    7·1 answer
  • WhAts the answer to 5?
    13·2 answers
  • How do I factor <br> x ^5−x^ 4+3x−3
    10·1 answer
  • I believe this is a quadratic formula. <br><br> 3x^2 - 5 = -8x - 10
    7·1 answer
  • What is the correct standard form for 30+2+0.1+0.005<br><br>​
    10·1 answer
  • Help i give you brinly
    7·1 answer
  • Y = x + 5; x = 3 how do i do this problem
    5·1 answer
  • As an estimation we are told £3 is €4.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!