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
mario62 [17]
4 years ago
12

What are the sine, cosine, and tangent of 7 pi over 4 radians?

Mathematics
2 answers:
NeTakaya4 years ago
8 0

Answer:

sin Θ = negative square root 2 over 2 ; cos Θ = square root 2 over 2 ; tan Θ = −1

Step-by-step explanation:

polet [3.4K]4 years ago
4 0
Sin(7π/4) = sin(315)
sin(7π/4) = -√(2)/2

cos(7π/4) = cos(315)
cos(7π/4) = √(2)/2

tan(7π/4) = tan(315)
tan(7π/4) = -1
You might be interested in
I need help with 5&6 please ASAP!!!!!!!
Elenna [48]
Hi BFFF IM MDJXJCNDM
4 0
3 years ago
Read 2 more answers
Jason has already used 4/12 cans of paint while painting furniture. He is painting chairs which each use 10/6 cans of paint.
Lady bird [3.3K]

Answer:

Based off of the calculations I did, I got 32 as the answer.

Step-by-step explanation:

Jason uses 10/6 of the paint for each chair he paints and according to the question, there are 19 chairs.

So we multiply these two numbers to get the amount of paint used after painting all 19 chairs.

10/6 * 19 = 31.666...

Then we add the previous amount Jason used for painting the furniture to the total amount of paint used after painting the 19 chairs.

31.666... + 4/12 = 32.

Thus, Jason used 32 cans of paint in total.

5 0
3 years ago
Read 2 more answers
Expand and reduce (2+√3)^2
nasty-shy [4]

Answer:

7 + 4\sqrt{3}

Step-by-step explanation:

note that \sqrt{a} × \sqrt{a} = a

Given

(2 + \sqrt{3} )² = (2 + \sqrt{3} )(2 + \sqrt{3} )

Each term in the second factor is multiplied by each term in the first factor, that is

2(2 + \sqrt{3} ) + \sqrt{3}(2 + \sqrt{3} ) ← distribute both parenthesis

= 4 + 2\sqrt{3} + 2\sqrt{3} + 3 ← collect like terms

= 7 + 4\sqrt{3}

6 0
3 years ago
If Joe's heart beats 1,200,703 times
professor190 [17]

11 days, 21 hours, and 52 minutes have elapsed

(this answer is assuming he would have a normal heart rate of 70 bpm)

First, you would divide 1,200,703 by 70:

1,200,703/70=17,152.9

This is the amount of minutes that have elapsed.

Then, you convert the minutes to hours by dividing by 60:

17,152.9/60=285.8816667 (285 hours and 52 minutes)

This gives you how many hours and minutes have elapsed.

Finally, you calculate the number of days that have elapsed by dividing 285 by 24 (there are 24 hours in a day):

285/24=11.875 (11 days and 21 hours).

Put all of the amounts together to get the final answer:

11 days, 21 hours, and 52 minutes have elapsed

7 0
3 years ago
Y=−2x+1<br> x−3y=11 find the solution using elimination.
yawa3891 [41]

Answer:

Step-by-step explanation:

Using first equation in the second gives you

x-3(-2x+1)=11

x+6x-3=11

7x-3=11

7x=14

x=2, making y=-2x+1 become

y=-2(2)+1

y=-4+1

y=-3 so the solution is the point

(2,-3)

3 0
3 years ago
Other questions:
  • What are algebra problems nurses use
    8·1 answer
  • The cashier has been directed to sell an item for half off its regular price of$1.98.what is the sale price
    12·1 answer
  • A motorboat has a four hour supply of gasoline. How far from the marina can it travel if the rate going out against the current
    9·1 answer
  • Find the height, H, of the triangle shown
    13·1 answer
  • How is multiplication using partial products different from multiplication using regrouping?
    11·2 answers
  • Solve for x <br><br> need help asap!!
    5·1 answer
  • The problem is in the pictures, please show step by step how to do it. Thanks! :)
    7·2 answers
  • Dimensions of a building are 345 feet by 295 feet. If 1 inch represents 42 feet, what are the dimensions of the building on the
    15·1 answer
  • Use the Pythagorean theorem to prove whether or not each set of numbers represent the side lengths of a right triangle.
    12·1 answer
  • Rhonda took $20 with her to spend on popcorn and candy for herself and her friends at the movie theater. The price for each bag
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!