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
Digiron [165]
3 years ago
8

Please show work on these questions!!!

Mathematics
1 answer:
asambeis [7]3 years ago
7 0

Answer:

- 14π/9; 108°; -√2/2; √2/2

Step-by-step explanation:

To convert from degrees to radians, use the unit multiplier \frac{\pi }{180}

In equation form that will look like this:

- 280° × \frac{\pi }{180}

Cross canceling out the degrees gives you only radians left, and simplifying the fraction to its simplest form we have -\frac{14\pi }{9}

The second question uses the same unit multiplier, but this time the degrees are in the numerator since we want to cancel out the radians.  That equation looks like this:

\frac{3\pi }{5} × \frac{180}{\pi }

Simplifying all of that and canceling out the radians gives you 108°.

The third one requires the reference angle of \frac{3\pi }{4}.

If you use the same method as above, we find that that angle in degrees is 135°.  That angle is in QII and has a reference angle of 45 degrees.  The Pythagorean triple for a 45-45-90 is (1, 1, √2).  But the first "1" there is negative because x is negative in QII.  So the cosine of this angle, side adjacent over hypotenuse, is -\frac{1}{\sqrt{2} }

which rationalizes to -\frac{\sqrt{2} }{2}

The sin of that angle is the side opposite the reference angle, 1, over the hypotenuse of the square root of 2 is, rationalized, \frac{\sqrt{2} }{2}

And you're done!!!

You might be interested in
Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest
lana [24]

Answer:

1/21

Step-by-step explanation:

Cards: 2,3,4,5,6,7,8      7 cards

1st card :5

P(5) = number of 5's / total

       = 1/7

Then we keep the card

Cards: 2,3,4,6,7,8   only 6 cards left

card less than 4: 2,3

P (card less than 4)  = number of cards less than 4/ total cards

                                  = 2/6 = 1/3

P (5, no replacement, card less than 4) = P(5) * P( less than 4)

                                                                 = 1/7 * 1/3

                                                                  =1/21

4 0
3 years ago
Read 2 more answers
4x²+4x-24 step by step
kaheart [24]

Answer:

4(x-2)(x+3)

  1. Factor a GCF from the expression, if possible.
  2. Factor a Trinomial, if possible.
  3. Factor a Difference Between Two Squares as many times as possible.

Please Mark Brainliest If This Helped!

4 0
2 years ago
Read 2 more answers
3n+7 write the first five terms
harkovskaia [24]

Answer:

10

13

15

17

22

Step-by-step explanation:

the first 5 terms will be 1,2,3,4 and 5.

I guess...

6 0
2 years ago
Read 2 more answers
25 points!! help me out plssss
hodyreva [135]
What is the question? It doesn’t show
6 0
3 years ago
Which value of X is a solution of x&lt;-2<br><br> A.-3<br> B.-2<br> C.-1<br> D.0
iren [92.7K]

Answer:

A.) -3

Step-by-step explanation:

-3 is less than -2 therefore, it fits the answer.

8 0
2 years ago
Read 2 more answers
Other questions:
  • -11 - (-7)= simplify
    9·2 answers
  • He hypotenuse of a right triangle is three times the length of one of the legs. the length of the other leg is 648‾‾‾‾√648 feet.
    12·1 answer
  • What is the anwer? plz help. 2(4x+2) = 4x - 12(x-1)
    6·2 answers
  • What is 3 hours 35 minutes + 2 hours 45 minutes
    5·2 answers
  • Graph y=-2(x+1)^2+4 (must show all work that leads to your graph) please help
    13·1 answer
  • I will give brainliest!
    14·1 answer
  • A football team played 90 matches. They won 37 matches.
    15·1 answer
  • what is the volume of a cylinder in cubic cm with a height of 9cm and a base diameter of 16cm round to the nearest tenths place
    11·1 answer
  • I’ll give brainly The measure of ABC = 180°.
    5·1 answer
  • Mary has scored 99, 83, 74, and 69 on her previous four tests. What score does she need on her next test so that her average
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!