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Nitella [24]
3 years ago
6

Find the exact value of tan(pi/12) using the sum and difference formulas

Mathematics
2 answers:
kari74 [83]3 years ago
7 0
Π/12 is half of π/6, which is 30 degree
tan(α/2)=(1-cosα)/sinα)
plug in the values: tan(π/12)=(1-cosπ/6)/sin(π/6)=(1-√3/2)/(1/2)=2-√3
JulsSmile [24]3 years ago
4 0

Answer:

A

Step-by-step explanation:

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g Suppose a kind of disease exists within 1% of the population and a certain test can help diagnose it. If someone has the disea
likoan [24]

Answer:

0.0392 = 3.92% probability that the test result is positive.

Step-by-step explanation:

Probability of a positive test:

95% of 1%(person has the disease)

100 - 97 = 3% of 100 - 1 = 99%(person does not have the disease).

What is the probability that the test result is positive?

p = 0.95*0.01 + 0.03*0.99 = 0.0392

0.0392 = 3.92% probability that the test result is positive.

4 0
3 years ago
What's the correct answer for this?<br><br>please help me out!!​
natima [27]
X=25 is the answer

EXPLANATION:

Since we have here similar triangles, then 2x+2/x+3 must be equivalent of 26/14

2x+2/x+3=26/14
2x+2/x+3=13/7
7(2x+2)=13(x+3)
14x+14=13x+39
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4 0
3 years ago
If a box of 12 tacos cost 9.99 then how much is one taco
nadya68 [22]
I could be wrong but is it $1.20?
6 0
3 years ago
Read 2 more answers
Use the distributive property to rewrite 6(4-x)
Arlecino [84]

Answer:

24-6x

Step-by-step explanation:

To distribute, you multiply the number outside the parenthesis by each number inside, keeping in mind the signs.

So, 6(4-x) = 6(4) - 6(x) = 24-6x

8 0
4 years ago
Read 2 more answers
Cost of book (x) exceeds twice the cost of pen (y) by Rs 10. This
Eddi Din [679]

The relationship between the cost of books and pens is an illustration of linear equation.

The linear equation is (a) x - 2y - 10 =0

From the question, we have:

x exceeds 2 times y by 10

Rewrite as:

x exceeds 2y by 10

Exceed means plus (+)

So, we have:

x = 2y + 10

Equate the above equation to 0

x - 2y - 10 =0

Hence, the required equation is (a) x - 2y - 10 =0

Read more about linear equation at:

brainly.com/question/11897796

5 0
2 years ago
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