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
spayn [35]
2 years ago
13

(cos2A−cos2B)2+(sin2A+sin2B)2=4sin2(A+B)​

Mathematics
1 answer:
lbvjy [14]2 years ago
8 0

Answer:

{( \cos2A -  \cos2B)  }^{2}  +  {( \sin2A +  \sin2 B  }^{2}\\    =  ( - 2\cos2A \cos2B  +  { \cos {}^{2} 2A } +  \cos {}^{2} 2B) + (2 \sin2A \sin2B +  \sin {}^{2} 2A +  \sin {}^{2} 2B)\\  \\  { =  - 2(  \sin2A +  \sin 2 B -  \cos2 A -  \cos2B) }\\  \\ { = -  2( - 4 \sin( A + B) \cos(A + B) } \\  \\  =    {\tt{double \: angle \: of \: sine}}\\  \\ { = 2 \times 2(2 \sin (A + B) \cos(A + B)) }\\  \\  { = 4 \sin2(A + B)}

You might be interested in
The sum of two numbers is 80. Their difference is 22.
AVprozaik [17]

Answer:

51 + 29

Step-by-step explanation:

7 0
3 years ago
HELP PLEASE I'LL GIVE 30 POINTS!!!​
jasenka [17]

Answer:

x = 45

Step-by-step explanation:

Straight line has 180 degrees; so if you add all the angles up:

2x + x + x = 180

4x = 180

x = 45 degrees

6 0
3 years ago
Read 2 more answers
A recipe needs ½ cup of chocolate chips for each ¾ cup of sugar. How many cups of sugar are needed for each cup of chocolate chi
ipn [44]
One cup of chocolate chips =1 1/2 cups sugar
4 0
2 years ago
Read 2 more answers
Help mathh is it growth, decay or neither??​
Elenna [48]

Answer:

growth

Step-by-step explanation:

7 0
3 years ago
What is the logarithmic form of 9² = 81?
Scorpion4ik [409]

Answer:

9*9=81

(if it is wrong i am sorry!)

8 0
3 years ago
Other questions:
  • (Write the rate as a fraction, then find each unit rate.)
    6·1 answer
  • Tom is thinking of two numbers,a and b,where a is a positive and b is negative. write to inequalities that Tim can use to compar
    8·1 answer
  • Evaluate the limit using the appropriate Limit Law(s). (If an answer does not exist, enter DNE.) lim t → −2 t4 − 3 2t2 − 3t + 3
    14·1 answer
  • 3 times a number x, subtracted from 18, is less than−90.
    9·2 answers
  • How can the area of the whole rectangle be represented
    10·2 answers
  • Jamal owns a parking garage and is trying to find the relationship between hour of the day and number of cars in the garage. He
    6·2 answers
  • Please, show some work
    5·2 answers
  • Simplify the expression so there is only one positive power for the base, -5.
    6·1 answer
  • There are 8 dinosaur eggs in a nest. Each egg weighs 48 ounces. How many pounds do all the eggs in the nest weigh together?
    15·2 answers
  • Determine the number of grams of HCl that can react with 0.750 g of Al(OH)3
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!