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
sergij07 [2.7K]
3 years ago
8

HELP....someone plz solve this proof for me......I'll give you 5stars and brainliest​

Mathematics
1 answer:
IceJOKER [234]3 years ago
3 0

Answer:

1+cos^2(2A)=(1−cos2(2A))+2cos^2(2A)

=sin^2(2A)+2(cos^2A−sin^2A)^2

=(2sinAcosA)^2+2(cos^4A−2cos^2Asin^2A+sin^4A)

=2(cos^4A+sin^4A)

Step-by-step explanation:

You might be interested in
Please help!
SpyIntel [72]
Number 1 is B
Number 2 is also B
3 0
3 years ago
Find the area of the triangle below. <br> Be sure to include the correct unit in your answer.
qaws [65]
Is there a picture???????
8 0
3 years ago
URGENT PLEASE HELP!!!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted! (39pt
WITCHER [35]

Angle O=64

Side m=7.3159882(rounded if needed)

Side n=16.68902(round if needed)

We are given

Angle M which equal 26.

Angle N equals 90 degrees

Side MN which equal 15.

We are asked to find all the missing elements of the triangle.

  1. Angle O can be found using triangle interior theorem so we can add 90+26+x =180 to find the value that satisfies the x value.

90 + 26 + x = 180

116 + x = 180

x = 64

Angle O=64 degrees

We can find side m by doing law of sines.

\frac{on}{ \sin(26) }  =  \frac{mn}{ \sin(64) }

\frac{on}{ \sin(26) }  =  \frac{15}{ \sin(64) }

on =  \frac{15}{ \sin(64) }  \times  \sin(26)

which is 7.315(round if neeeded).

We can find side n using pythagorean theorem,

{15}^{2}  +  {7.3}^{2}  =  {n}^{2}

225 + 53.29 =  {n}^{2}

\sqrt{278.29}

Side n=16.689(round if needed)

4 0
3 years ago
What is 3/20 written as a percent?
alex41 [277]
Express it as a decimal. 

3/20 = 0.15 by division 

then move the decimal point twice to the right and affix the percent symbol 

thus, 15%.
6 0
3 years ago
Read 2 more answers
What is the midpoint of the segment shown below?
Aneli [31]

Answer:

(1, -3/2)

Step-by-step explanation:

The x coordinate is the same for both endpoints so the x coordinate for the midpoint is 1

The y coordinate for the midpoint is found by adding the two y coordinates and dividing by 2

(2+-5)/2 = -3/2

The midpoint is

(1, -3/2)

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is a number that can be divided out of each term in an expression?
    13·2 answers
  • Kesia knows that 1/4=0.25. Explain how she could use this fact to determine the decimal equivalent of 5/8
    13·2 answers
  • After 5 minutes, Pablo jumped 14.6 feet. After 10 minutes, he jumped 14.1 feet. What are the two ordered pairs?
    6·1 answer
  • What's 4.5 as a fraction?
    9·2 answers
  • Square root &amp; simplifying radicals <br> √30
    12·1 answer
  • Here is a linear equation, y = 1x +
    7·2 answers
  • A) Each exterior angle in a regular n-gon measures 40˚. How many sides does this n-gon have?
    10·1 answer
  • 7:5 is equivalent to...?​
    9·1 answer
  • PLEASE HELP WITH ALGEBRA!!!
    8·1 answer
  • PLSS HELP Identify the five important values from this box and whisker plot. Explain how you got your answers
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!