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Dafna11 [192]
3 years ago
7

How do you solve: secx=-5/2, tanx<0 Find all six trig functions

Mathematics
1 answer:
Brut [27]3 years ago
5 0

Answer:

sec theta = (sqrt24/5) cos theta = -2/5 tan theta = (-[sqrt 21]/2) sec theta = 5/2 csc theta = (5sqrt21)/21 cot theta = (-2sqrt21)/21

Step-by-step explanation:

During the problem, secx = -5/2, we can assume that as cos = -2/5. -2 = x. 5 = r. find for Y with: x^2+y^2=r^2. After that, plug in for the variables and you get all the answers. Rationalize the square roots, don't forget.

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Which of the following sets are closed under division? Select all that apply.
Lilit [14]
The appropriate choice is probably
  none of the above


While the inverse of any irrational number is irrational, their ratio my not be, for example (√8)/(√2) is rational.
6 0
3 years ago
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Combining like terms <br> -2x+3-4x+5-4^2+11+2x^2-14 <br> plz help me
liberstina [14]

Answer:   2x2 - 6x - 11

Step-by-step explanation:

1. Evaluate

2. Collect like terms and calculate

3. Reorder the terms

Answer:

                   2x2-6x-11  ( the second two is above the x)

6 0
3 years ago
A pack of cinnamon rolls sells for four dollars what is the sales tax rate if the total cost of the cinnamon rolls is $4.32
guapka [62]
32 cents is the tax
8 0
3 years ago
A mixture of 30 pounds of candy sells for $1.10 a pound. The mixture consists of chocolates worth $1.50 a pound and chocolates w
Allushta [10]

Answer: Option 'B' is correct.

Step-by-step explanation:

Number of pounds of candy = 30

Cost per pound = $1.10

Total amount would be

30\times 1.10\\\\=33

Let the number of pound that sold at $1.50 per pound be 'x'.

Let the number of pound that sold at 90 cents per pound be '30-x.

According to question, we get that

1.5x+0.90(30-x)=33\\\\1.5x+27-0.90x=33\\\\1.5x-0.9x=33-27\\\\0.6x=6\\\\x=\dfrac{6}{0.6}=10

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Therefore, Option 'B' is correct.

8 0
3 years ago
What is the surface area of this design?<br> A.76in2<br> B.280in2<br> C.360in2<br> D.392in2
Phantasy [73]

Answer:

There are 8 faces on the figure.

There are two of the same sides so we can multiply that by 2. That side equals 76 in. 76 x 2 = 152.

Then, there is another side that equals 4 x 4 which is 24.

Another side equals 4 x 6 which is 24.

Another one equals 6 x 6 which is 36.

Another side equals 6 x 6 which also equals 36.

Another side equals 10 x 6 which is 60.

The last side is 10 x 6 which equals 60.

Which should add up to 392 in.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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