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
Zigmanuir [339]
2 years ago
5

Explain why cos(x)=sin(90-x) for x such that 0

Mathematics
1 answer:
aleksley [76]2 years ago
8 0
Use the sin(a - b) formula. 
<span>sin(90 - x) = </span>
<span>sin90 cosx - cos90 sinx = </span>
<span>1 cosx - 0 sinx = </span>
cosx
You might be interested in
Order the following units of a capacity families to greatest gallon paint cup quart
Tju [1.3M]

Answer:

7 yards

Step-by-step explanation:

3 0
3 years ago
Can someone work this out for me please? I'm so confused.
ruslelena [56]
Multiply 3/4 and 4 and you simply get 3 (these are the amount of tickets bought) Then divide the cost by tickets which results in 2.05

(3/4) x 4=3
6.15 / 3 = 2.05
3 0
3 years ago
A shop sells sweets where every 3 sweet wrappers can be exchanged for one more sweet. Kelvin has enough money to buy only 19 swe
drek231 [11]

Answer:

Kelvin can get 6 free sweets

6 0
1 year ago
How many ways can first second and third place assigned
Papessa [141]

Answer:

i cannot help you get the answer to the question without more information but i can explain how to solve it, what your question is, is called a "permutation"

Step-by-step explanation:

To calculate permutations, use the equation nPr, where n is the total number of choices and r is the amount of items being selected. To solve this equation, use the equation nPr = n! / (n - r)!    , an exclimation point means the factorial, say we need the factorial of 4, we would do this 4x3x2x1 go left to right, and it is not all at once. you multiply 4 times 3 which equals 12, then multiply 12 times 2... so on and so forth

3 0
3 years ago
Find the area of the triangle
Svetradugi [14.3K]
A = LW

A = 28 × 7.1

A = 198.8

The correct answer is A.
4 0
3 years ago
Read 2 more answers
Other questions:
  • Anyone know the answer?
    13·2 answers
  • Find the area of ΔDEF to the nearest tenth. ANSWERS: A) 127.8 square units B) 46.5 square units C) 63.9 square units D) 23.3 squ
    11·1 answer
  • I’m horrible at math lol
    13·1 answer
  • A professor compares the exam grades of students based on whether they have a learning disability (yes, no) and where they sit i
    6·1 answer
  • A bus can hold 108 passegers. If there are 12 rows of seats on the bus, how many seats are in each row?
    12·2 answers
  • Solve the equation 2z-5=11
    14·2 answers
  • What is the slope of the line that passes through the points (26, 7) and (-39, 12)
    11·1 answer
  • Evaluate -1-(-z) when z=-2
    10·1 answer
  • Question
    15·1 answer
  • The ratio of red jellybeans to purple jellybeans is 9:5. What fraction of the jellybeans are red?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!