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
jekas [21]
3 years ago
13

Given two trig ratios find the third!

Mathematics
2 answers:
KiRa [710]3 years ago
8 0

Answer:

Step-by-step explanation:

A trig identity is tan(x) = sin(x)/cos(x) so

tan(A) = (4/7)/(3/7) = 4/3

brilliants [131]3 years ago
7 0

Answer:

Step-by-step explanation:

tanA = sinA/cosA = (4/7)/(3/7) = 4/3

You might be interested in
NEED HELP ASAP!! can someone please explain this to me!
34kurt

Answer:

  BG = 3; GE = 6

Step-by-step explanation:

The centroid of a triangle divides the median into two parts in the ratio 1 : 2. That is, the short segment is 1/3 the length of the median, and the long segment is 2/3 the length of the median.

  BG = 1/3·BE = 9/3 = 3

  GE = 2/3·BE = 2/3·9 = 18/3 = 6

7 0
3 years ago
Can someone please help me with these questions? Thanks
sergiy2304 [10]
D. 800(3.14) cm cubed
7 0
3 years ago
PLSSSS HELP<br><br> Which statement is true about the ratios shown?
Fiesta28 [93]

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

despacito

3 0
3 years ago
Read 2 more answers
g A psychic was tested for extrasensory perception (ESP). The psychic was presented with cards face down and asked to determine
diamong [38]

Answer:

Step-by-step explanation:

Hello!

The objective is to test ESP, for this, a psychic was presented with cards face down and asked to determine if each of the cards was one of four symbols: a star, cross, circle, square.

Be X: number of times the psychic identifies the symbols on the cards correctly is a size n sample.

p the probability that the psychic identified the symbol on the cards correctly

You have to calculate the sample size n to estimate the proportion with a confidence level of 95% and a margin of error of d=0.01

The CI for the population proportion is constructed "sample proportion" ± "margin of error" Symbolically:

p' ± Z_{1-\alpha /2} * (\sqrt{\frac{p'(1-p')}{n} } )

Where  d= Z_{1-\alpha /2} * (\sqrt{\frac{p'(1-p')}{n} } ) is the margin of error. As you can see, the formula contains the sample proportion (it is normally symbolized p-hat, in this explanation I'll continue to symbolize it p'), you have to do the following consideration:

Every time the psychic has to identify a card he can make two choices:

"Success" he identifies the card correctly

"Failure" he does not identify the card correctly

If we assume that each symbol has the same probability of being chosen at random P(star)=P(cross)=P(circle)=P(square)= 1/4= 0.25

Let's say, for example, that the card has the star symbol.

The probability of identifying it correctly will be P(success)= P(star)= 1/4= 0.25

And the probability of not identifying it correctly will be P(failure)= P(cross) + P(circle) + P(square)= 1/4 + 1/4 + 1/4= 3/4= 0.75

So for this experiment, we'll assume the "worst case scenario" and use p'= 1/4 as the estimated probability of the psychic identifying the symbol on the card correctly.

The value of Z will be Z_{1-\alpha /2}= Z_{0.975}= 1.96

Now using the formula you have to clear the sample size:

d= Z_{1-\alpha /2} * (\sqrt{\frac{p'(1-p')}{n} } )

\frac{d}{Z_{1-\alpha /2}} = \sqrt{\frac{p'(1-p')}{n} }

(\frac{d}{Z_{1-\alpha /2}})^2 =\frac{p'(1-p')}{n}

n*(\frac{d}{Z_{1-\alpha /2}})^2 = p'(1-p')

n = p'(1-p')*(\frac{Z_{1-\alpha /2}}{d})^2

n = (0.25*0.75)*(\frac{1.96}{0.01})^2= 7203

To estimate p with a margin of error of 0.01 and a 95% confidence level you have to take a sample of 7203 cards.

I hope this helps!

5 0
3 years ago
Read 2 more answers
ANSWER NOW PLEASE!!!!!!!!!!!!!!!! Mason and Laney ran laps to train for the long-distance running team. The ratio of the number
Ad libitum [116K]

Answer:

IM ON THIS TOO

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Is y = 2x - 3 a function
    10·1 answer
  • Average weight of a package?
    10·2 answers
  • I WILL MARK BRAINLIEST
    5·2 answers
  • Can someone find the graph of the inequality
    5·1 answer
  • If ABCD is a rectangle, calculate x as a function of α
    13·2 answers
  • For which values of c does the following polynomial have two complex roots? X^2+4x+C
    14·1 answer
  • I need help with this question
    10·1 answer
  • The graph on the other page
    7·1 answer
  • PLEASE HELP ME WITH THIS ASAP!! only one question
    12·1 answer
  • 6 bags of Skittles cost $3. How much is one bag?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!