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
Llana [10]
3 years ago
15

-secx} " align="absmiddle" class="latex-formula"> + \frac{1}{1+secx} = -2cot^{2} x
Mathematics
1 answer:
lidiya [134]3 years ago
4 0
We have the <span> Trigonometric Identities : </span>secx = 1/cosx; (sinx)^2 + (cosx)^2 = 1;
Then, 1 / (1-secx) = 1 / ( 1 - 1/cosx) = 1 / [(cosx - 1)/cosx] = cosx /
(cosx - 1 ) ;
Similar, 1 / (1+secx) = cosx / (1 + cosx) ;
 cosx / (cosx - 1)  +  cosx / (1 + cosx) = [cosx(1 + cosx) + cosx (cosx - 1)] / [ (cosx - 1)(cox + 1)] =[cosx( 1 + cosx + cosx - 1 )] / [ (cosx - 1)(cox + 1)] =  2(cosx)^2 / [(cosx)^2 - (sinx)^2] = <span> 2(cosx)^2 / (-1) = - 2(cosx)^2;
</span>
You might be interested in
Given that it was less than 80º on a given day, what is the probability that it also rained that day? 0.3 0.35 0.65 0.7
eimsori [14]

The probability that it also rained that day is to be considered as the 0.30 and the same is to be considered.

<h3>What is probability?</h3>

The extent to which an event is likely to occur, measured by the ratio of the favorable cases to the whole number of cases possible.

The probability that the temperature is lower than 80°F and it rained can be measured by determining the number at the intersection of a temperature that less than 80°F and rain.

So, This number is 0.30.

Hence, we can say that it was less than 80°F on a given day, the probability that it also rained that day is 0.30.

To learn more about the probability from the given link:

brainly.com/question/18638636

The above question is incomplete.

The conditional relative frequency table was generated using data that compared the outside temperature each day to whether it rained that day. A 4-column table with 3 rows titled weather. The first column has no label with entries 80 degrees F, less than 80 degrees F, total. The second column is labeled rain with entries 0.35, 0.3, nearly equal to 0.33. The third column is labeled no rain with entries 0.65, 0.7, nearly equal to 0.67. The fourth column is labeled total with entries 1.0, 1.0, 1.0. Given that it was less than 80 degrees F on a given day, what is the probability that it also rained that day?

#SPJ4

7 0
1 year ago
Short Response<br> 6. Are the triangles at the right simílar? Explain.
Taya2010 [7]

Answer:

Yes they are similar because they are both right angles but the one on the right is bigger than the one on the left.

Step-by-step explanation:

5 0
3 years ago
Plz help me with number 13 plz I need your help plz help me I’m begging you plz help me plz it’s an emergency plz I’m begging yo
Goryan [66]
<h2>A = 0.625</h2>

There are 8 points between 1 and 0 so divide 1 by 8.

1 / 8 = 0.125

Each point has a value of 0.125.

You can minus 0.125 from 1 until you reach A.

Or you can multiple 0.125 by the number of points from 0 to A, including A.

1 - 0.125 - 0.125 - 0.125 = 0.625

0.125 * 5 = 0.625

<h2>A = 0.625</h2>
6 0
3 years ago
Read 2 more answers
Help me please<br> thx so much<br> have a good one
Alona [7]

Answer:

The answer is the last one

Step-by-step explanation:

Hope this helps

7 0
3 years ago
PLEASE HELP I WILL MARK BRAINLIEST
Lelu [443]

Answer:

27 \:  {km}^{2}

Step-by-step explanation:

Given is the shape of a trapezoid.

Therefore,

Area of the trapezoid

=  \frac{1}{2} (2 + 7) \times 6 \\  \\  = 9 \times 3 \\  \\  = 27 \:  {km}^{2}

5 0
3 years ago
Other questions:
  • A population of bacteria is growing according to the exponential model P = 100e.70t, where P is the number of colonies and t is
    15·2 answers
  • Anyone know this ??
    13·1 answer
  • A local museum had a total of 38,267 visitors last year. The museum was open everyday except for four holidays. On average how m
    12·2 answers
  • HELP WITH VOLUME OF SPHERE QUESTION!
    5·1 answer
  • We went on a road trip and drove 70 miles per hour.If we continued at this speed,how long would it take us to drive 420 miles.sh
    15·1 answer
  • Carowinds has a fun day for elementary schools.Students get to go explore and learn at the park.Carowinds wants 5,450 students t
    8·1 answer
  • ®<br><img src="https://tex.z-dn.net/?f=7x%20%2B%2023%20%3D%204x%20-%201" id="TexFormula1" title="7x + 23 = 4x - 1" alt="7x + 23
    9·2 answers
  • WILL MARK BRAINLEST
    15·1 answer
  • Two cars are heading toward the same intersection. Car A travels due east at 20 miles per hour, and Car B travels due north at 5
    14·1 answer
  • What is the justification for step 2 in the solution process?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!