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vodka [1.7K]
3 years ago
12

How do i verify? (1-cos^2 x)(1+tan^2 x)=tan^2 x

Mathematics
1 answer:
andre [41]3 years ago
7 0

Answer:

(1-cos^2 x)(1+tan^2 x)=tan^2 x is an identity

Step-by-step explanation:

use pictomath

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The manager of a factory wants to compare the mean number of units assembled per employee in a week for two new assembly techniq
antoniya [11.8K]

Answer:

The most appropriate inferential statistic test in the present situation is the;

b. Two-sample t-test

Step-by-step explanation:

From the question, we have;

The number of subjects in each sample, n₁ = 100

The number of samples = 2

The nature of the test = To compare the two means

The value of the population standard deviation, σ = Unknown

From the given parameters, we have;

The t-test is a method of inferential statistics for determining whether the difference between the mean of two groups is significant, that is if the observed difference are due to chance, where the groups are likely to have some characteristics that are related

The t-test is utilized when testing an hypothesis, and it is used for small samples, where the population standard deviation is unknown

The types of t-test used are;

a) One-sample t-test

b) Two-sample t-test

c) Paired Sample t-test

Therefore, a two-sample t-test is most appropriate.

3 0
3 years ago
10n^{2} - 12 = -8<br> Please help
torisob [31]

The value for n is \frac{\sqrt{10} }{5}

<h3>solving for n</h3>

<u>given data</u>

10n^{2} - 12 = -8

making n the subject of the formula

10n^{2}  = -8 + 12

10n^{2}  = 4

divide through by 10

n^{2}  = 4 / 10

finding the square root of both sides

n = square root ( 4 / 10 )

n = \sqrt{\frac{4}{10}

n = 0.632 or \frac{\sqrt{10} }{5}

Read more the subject of formula here: brainly.com/question/21140562

#SPJ1

7 0
2 years ago
Thank you in advance to whoever answers!!!!!!
krok68 [10]

Answer:

136

Step-by-step explanation:

-4 to 10 is 14

14/2=7 each number on top gets multiplied by 7 then subtracted by 4

so 20*7=140-4 136

5 0
3 years ago
The period of a pendulum is the time the pendulum takes to swing back and forth one full time. The function I = 0.81t^2 relates
kogti [31]

Answer:

b.  t = 10.5 seconds.

Step-by-step explanation:

l = 0.81t^2

90 = 0.81t^2

t^2 = 90 / 0.81

t^2 = 111

t = 10.5 seconds.

5 0
3 years ago
A triangle has a perimeter of 16x + 4. If Side 1 is 3x + 2, Side 2 is 8x + 7, what is the measure of Side 3?
scoundrel [369]

Answer:

5x - 5

Step-by-step explanation:

To find the missing side, add the two sides together and subtract them from the perimeter.

side 1 + side 2

3x + 2 + 8x + 7

combine like terms

11x + 9

Subtract from the perimeter

16x + 4 - (11x + 9)

rewrite as an addition problem, so you need to change the signs inside the parentheses.

16x + 4 + (-11x -9)

Now combine like terms

5x - 5

8 0
2 years ago
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