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
Agata [3.3K]
3 years ago
15

Algebra 2 DCA, I have between two answers which are x and 1, pls help lol

Mathematics
1 answer:
VladimirAG [237]3 years ago
8 0

Answer:

1/x

Step-by-step explanation:

You might be interested in
Find the values of sin2u, cos2u, and tan2u given the figure.
Vadim26 [7]

Givens

y = 2

x = 1

z(the hypotenuse) = √(2^2 + 1^2)  = √5

Cos(u) = x value / hypotenuse = 1/√5

Sin(u) = y value / hypotenuse = 2/√5

Solve for sin2u

Sin(2u) = 2*sin(u)*cos(u)

Sin(2u) = 2(\dfrac{1}{\dsqrt{5}} * \frac{2}{\dsqrt{5}} = \dfrac{2}{5}) = 4/5

Solve for cos(2u)

cos(2u) = - sqrt(1 - sin^2(2u))

Cos(2u) = - sqrt(1 - (4/5)^2 )

Cos(2u) = -sqrt(1 - 16/25)

cos(2u) = -sqrt(9/25)

cos(2u) = -3/5

Solve for Tan(2u)

tan(2u) = sin(2u) / cos(2u) = 4/5// - 3/5 = - 0.8/0.6 = - 1.3333 = - 4/3

Notes

One: Notice that you would normally rationalize the denominator, but you don't have to in this case.  The formulas are such that they perform the rationalizations themselves.

Two: Notice the sign on the cos(2u). The sin is plus even though the angle (2u) is in the second quadrant. The cos is different. It is about 126 degrees which would make it a negative root (9/25)

Three: If you are uncomfortable with the  tan, you could do fractions.

\text{tan(2u)} = \dfrac{\dfrac{4}{5}}{\dfrac{-3}{5} } =\dfrac{4}{5} *\dfrac{5}{-3} =\dfrac{4}{-3}

7 0
3 years ago
Can someone help me please?
Fynjy0 [20]

Answer:

3 mi because aa^{2}+b^{2}=c^{2}

which a= 5 mi and c= 8 mi so b is 8-5 which is 3, hope this helps :)

6 0
2 years ago
Read 2 more answers
A statistician is collecting data to help her estimate the number of pickpockets in a certain city. she needs 150 pieces of data
ololo11 [35]
51 pieces of data will be collected
7 0
3 years ago
What do you get when you combine like terms with 1/3w and 4w?
Naya [18.7K]

Answer:

13w/3

Step-by-step explanation:

1/3 w+ 4w =( 1/3 + 4) w = (1+12)/3 w = 13/3w

4 0
3 years ago
Find the scalar and vector projections of b onto<br> a.a = i + j + k, b = i - j + k
yarga [219]
Try this option.
1 is for scalar (result is number), 2 is for vector (result is vector).

5 0
3 years ago
Other questions:
  • A rectangle has a length of 45 inches less than 4 times its width. if the area of the rectangle is 3325 square inches, find the
    5·1 answer
  • Gio is studying the rectangular pyramid below.
    10·2 answers
  • A rectangular prism with a volume of 4 cubic units is filled with cubes with side lengths of 1/3 unit. How many 1/3 unit cubes d
    6·1 answer
  • Which transformations are needed to change the parent sine function to
    11·2 answers
  • Derivative of sin11xcos11x
    6·1 answer
  • Put these numbers in order from least to greatest. I'm too lazy to do it.
    12·1 answer
  • Can someone help me out I need help!
    5·2 answers
  • Find the sum and express it in simplest form.
    7·1 answer
  • Sue Arva has 460 beads to make bracelets. Each bracelet will use 50 beads. How many bracelets will she be able to make? A. 9 B.
    11·1 answer
  • LAY
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!