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
balu736 [363]
3 years ago
9

What is sin 7pi/4? I'm currently taking a tirg course and need help

Mathematics
1 answer:
qaws [65]3 years ago
5 0
To ease the understanding, let's write it in degrees and not in Radian:

Formula of conversion: Degree°/180 = Radian/π

Convert 7π/4 in degrees: = (7x180)/4 = 315°

This angle is in the IV th Quadrant of the UNIT circle. So you can write 315° or - 45° .

sin(7π/4) = sin(315°) = sin( - 45°) = - sin(45°) = - (√2)/2
You might be interested in
Greenville and north valley are 4.5 inches apart 1 inch equals 20 mkiles
Greeley [361]
90 would be your answer.
5 0
3 years ago
Work out 3/5 of 900
Mars2501 [29]

Answer:

540

Step-by-step explanation:

1. We assume, that the number 900 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 900 is 100%, so we can write it down as 900=100%.

4. We know, that x is 3.5% of the output value, so we can write it down as x=3.5%.

5. Now we have two simple equations:

1) 900=100%

2) x=3.5%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

900/x=100%/3.5%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 3.5% of 900

900/x=100/3.5

(900/x)*x=(100/3.5)*x       - we multiply both sides of the equation by x

900=28.571428571429*x       - we divide both sides of the equation by (28.571428571429) to get x

900/28.571428571429=x

31.5=x

x=31.5

now we have:

3.5% of 900=31.5

3 0
3 years ago
8 less than a number 7 times a number is the same as 4 more than 3 times the number. Find the number
Gwar [14]
X=3

7x-8=3x+4
4x=12
x=3
4 0
3 years ago
Read 2 more answers
What is the missing value in this table of equivalent ratios?
Hitman42 [59]

Answer:

A

Step-by-step explanation:

follow the pattern  in its timetables,hope this helps u!

7 0
2 years ago
What is the complement of 57?
umka21 [38]
Complements are numbers that add 90. Since one is 57, the other has to add to 57. So 33 would add with 57 to get 90.
4 0
3 years ago
Other questions:
  • Name a number whose square root and cube root are whole numbers
    14·1 answer
  • A ladybugs length measures 2cm express this measurement in meters explain your thinking include an equation with an exponent in
    14·1 answer
  • *****urgent help ****Write 2447457.627 in standard form to a appropriate degree of accuracy pls i need help
    6·1 answer
  • Please help and explain!!!!!
    14·1 answer
  • 0.046666666666667 Rounded to the nearest cent
    6·1 answer
  • A+b-c=180 Solve the equation
    8·2 answers
  • What’s 20{5[100-3(25+35)+20]}
    15·1 answer
  • The sum of 7 ⅓ and a number, n is 10 ⅜. What is the number?
    5·2 answers
  • Find the products (3a-2)^2
    9·1 answer
  • HELPP
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!