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
Veseljchak [2.6K]
3 years ago
14

Is the following statement true? Explain.

Mathematics
1 answer:
sukhopar [10]3 years ago
4 0

Step-by-step explanation:

We can prove the statement is false by proof of contradiction:

We know that cos0° = 1 and cos90° = 0.

Let A = 0° and B = 90°.

Left-Hand Side:

cos(A + B) = cos(0° + 90°) = cos90° = 0.

Right-Hand Side:

cos(A) + cos(B) = cos(0°) + cos(90°)

= 1 + 0 = 1.

Since LHS =/= RHS, by proof of contradiction,

the statement is false.

You might be interested in
A cashier earns $7 an hour. if x is the number of hours worked, which function represents the cashier’s earnings? y = 7x y = x s
alisha [4.7K]

Answer:

y=7x

Step-by-step explanation:

The job pays $7 per 1 hour so to find out how much money you get for x hours, you would multiply the hourly rate ($7) by the amount of hours (x)

3 0
2 years ago
1/2(8a+200b)<br><br> Is the answer 4a+100b?
kaheart [24]

Answer:

you are correct it is, 4a+100b

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Zach is filling his dog's bowl with water. is it reasonable to say that Zach will need about 4 gallons of water.
pshichka [43]
It's not reasonable to give him 4 gallons because that's way too much for a dog bowl.
6 0
3 years ago
Read 2 more answers
I need help with Math please
Bess [88]
20 pages of stickers
6 0
3 years ago
Read 2 more answers
Store A
olga2289 [7]

Answer:

72

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • the sequence 15,30,45,60 look like 1,2,3,4...except each term is 15 times as large. so, the formula is 15n, where n represents t
    11·1 answer
  • what is the common difference between succeseive terms in this sequence? 9 , 2.5 , -4 , -10.5 , -17 ....
    13·1 answer
  • A cake recipe requires 3 1/4 cups of flour for 13 servings and 4 1/2 cups of flour for 18 servings. How much flour is required t
    9·1 answer
  • Neptune has 8 known moons. This is 2 more than 1/3 of the number of known moons on Saturn. How many moons is Saturn known to hav
    15·1 answer
  • Ahmed is taking orders for lunch. A slice of pizza costs $2.9 and a chicken sandwich costs $3.9. He collects $25.3for the group
    6·1 answer
  • What number is a factor of all these numbers 45,60,78,84,99
    7·2 answers
  • I need help please.
    13·1 answer
  • the market price of a share of some company was rs 415. the share was split to that its face value change from rs100 to rs5. if
    8·1 answer
  • Please help! I'll mark it as brainliest
    11·1 answer
  • Which situation can be represented by y=12x?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!