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
ELEN [110]
3 years ago
12

Cos (A − B)

Mathematics
1 answer:
iVinArrow [24]3 years ago
4 0
Answer is choice C) cosine is even; sine is odd

The properties that come with even and odd functions are...
f(-x) = f(x) indicates we have an even function. So cos(-x) = cos(x)
f(-x) = -f(x) indicates we have an odd function. So sin(-x) = -sin(x)

note: the end result of the proof will lead to cos(A)cos(B)+sin(A)sin(B)
You might be interested in
Nick bought 2.5 pounds of popcorn for $8.35 how much did he pay for each pound of popcorn
marta [7]

Answer:

$3.34 for each pound of popcorn

Step-by-step explanation:

All we must do, in this case, is divide 8.35 by 2.5.

This equals 3.34.

Therefore, each pound of popcorn cost $3.34.

Don't believe me? To check, just multiply 3.34 by 2.5.

Please let me know if you need help with anything else. :)

5 0
3 years ago
Which proportion below has a vertical
creativ13 [48]

Answer:

1 x 6 = 6 and 3 x 6 = 18

Step-by-step explanation:

3 0
4 years ago
What is -4m+5=5-4m show all solutions
Ymorist [56]

Answer:  

m=0

Step-by-step explanation:

How to solve your question 4 +5=5−4

Step 1: Rearrange Terms 4+5=5−4  4+5=−4+5

Step 2 : Subtract 5 from both sides 4+5=−4+5

                                                                   -5         -5

Step 3 : Simplify 4m= -4m

Step 4: Add 4m to both sides of the equation 4m= -4m

                                                                              +4    +4

Step 5:  Simplify 8m=0

m=0

8 0
3 years ago
Using the triangle below, find the ratio please need help answering for a quiz
Murrr4er [49]
<h3>sin22° = 5/4</h3><h3>tan22° = 3/√55</h3>

As we know that , sinA = opposite/hypotenuse & tanA = opposite/adjacent

So here we can find sin22° , because they already given the sides opposite & hypotenuse . And we can't find tann22° because they given the value of opposite but not given the value of adjacent side of the angle 22°

Now finding the adjacent side using

Pythagoras theorem :-

• Hypotenuse² = Base² + Height²

=> 40² = Base² + 15²

=> 1600 - 225 = Base²

=> Base² = 1375

=> Base = √1375

=> Base = 5√55

Now ,

  • tan22° = Opposite/Adjacent = 15/5√55 = 3/√55
  • sin22° = Opposite/hypotenuse = 15/40 = 5/4

8 0
3 years ago
Given f(x)= 2x-2/4 solve for f^-1(3)
Kaylis [27]
F(x)=y=(2x-2)/4
f^-1(x)=x=(2y-2)/4
4x=2y-2
4x+2=2y
f^-1(x)=y=2x+1
f^-1(3)=2(3)+1
=6+1
=7
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is (24 times 25)50 50=?
    9·1 answer
  • Pls help! I’m stuck!
    15·1 answer
  • If the average speed of a garden snail is 0.025 miles per hour and one inch is approximately 2.54 centimeters, how many minutes
    13·1 answer
  • Angle QPS is supplementary to angle psr. Also QPS=(2x+12) and PSR is x. Find the value of x. Can you help
    7·1 answer
  • Please help me with this
    5·1 answer
  • A square with a side of 8 cm is enlarged by a scale factor of 3. What would be the side length of the new square?
    8·1 answer
  • Casper has some whipping cream that is 18\%18%18, percent butterfat and some milk that is 4\%4%4, percent butterfat. He wants to
    14·2 answers
  • 6.
    13·1 answer
  • What is a decimal that is equivalent to the fraction 59/100?​
    5·2 answers
  • Convert from feet to yards.<br><br> 6,249 feet = ___ yards
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!