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3 years ago

If A is an obtuse angle and cos A = 3/5, find the values of tan A

Mathematics

2 answers:

slega [8]3 years ago

5 0

Answer:

the value has to be 54.6 and up

Step-by-step explanation:

Akimi4 [234]3 years ago

5 0

Answer:

The values have to be at or above 54.6

Step-by-step explanation:

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A health research institute collects information from 20 individuals on the number of years they have spent smoking cigarettes,

olga55 [171]

The correlation coefficient of the health research institute data measures the relationship between the age and the years of the smokers

The correlation coefficient is 0.53

<h3>How to calculate the correlation coefficient</h3>

The correlation coefficient (r) is calculated as:

$r = \frac{n(\sum xy) - \sum x \sum y}{\sqrt{[n \sum x^2 - (\sum x)^2][n\sum y^2 - (\sum y)^2}}$

Using the given parameters, we have:

$r = \frac{20 *8249 - 1257* 116}{\sqrt{[20 * 98823 - 1257^2][20 * 836 - 116^2}}$

Evaluate the exponents

$r = \frac{20 *8249 - 1257* 116}{\sqrt{[20 * 98823 - 1580049][20 * 836 - 13456}}$

Evaluate the products

$r = \frac{164980 - 145812}{\sqrt{[1976460 - 1580049][16720 - 13456}}$

Evaluate the differences

$r = \frac{19168}{\sqrt{[396411*3264}}$

Evaluate the product

$r = \frac{19168}{\sqrt{1293885504}}$

Evaluate the root

$r = \frac{19168}{35970.6}$

Evaluate the quotient

$r = 0.53$

Hence, the correlation coefficient is 0.53

Read more about correlation coefficient at:

brainly.com/question/1564293

8 0

2 years ago

I need 3 diffent names for slope

marshall27 [118]

Answer:

I don't know what you mean by names but I think you mean this:

<em>Synonyms & Antonyms of slope</em>

cant, diagonal, grade, gradient, inclination, incline, lean, pitch,

4 0

2 years ago

This area model shows 50 X 38 Which number is missing from the model

yan [13]

Answer:

Step-by-step explanation:

5 0

3 years ago

A spinner has an equal chance of landing

liq [111]

Answer:

1/15

Step-by-step explanation:

since there are 3 equal colors, they're all 1/3

since it's 5, it's 1/5

1/5 x 1/3

1/15

7 0

2 years ago

Which of the following is a monomial <br><br>A. 5x^2+2x+3<br>B. √x-1<br>C. 4x<br>D. 3/x

earnstyle [38]

C. 4x

Have a good day ;)

7 0

3 years ago