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Gemiola [76]
3 years ago
6

Give the exact value of the trigonometric function.

Mathematics
1 answer:
zimovet [89]3 years ago
8 0

Answer:

D) undefined

Step-by-step explanation:

we would like to simplify the following

\displaystyle  \sec \left( \frac{\pi}{2}  \right)

remember that, sec is the recipocal of cos

so,

\displaystyle   \frac{1}{\cos \left( \frac{\pi}{2}  \right) }

by unit circle we acquire

\displaystyle   \frac{1}{0}

remember that, dividing by 0 is undefined

hence,

\displaystyle  \sec \left( \frac{\pi}{2}  \right)  =\rm undefined

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A forestry researcher wants to estimate the average height of trees in a forest near Atlanta, Georgia. She takes a random sample
marusya05 [52]

Answer:

The margin of error for her confdence interval is of 0.3757.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

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99% confidence interval

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In which s is the standard deviation of the sample and n is the size of the sample.

Standard deviation of 0.55 meters.

This means that s = 0.55

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M = T\frac{s}{\sqrt{n}}

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Task 5:
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Answer:

p=18x+4

a=20x^2+17x-63

a=1350

Step-by-step explanation:

Given:

l=5x-7

w=4x+9

Required:

Area of the rectangle=?

Perimeter of the rectangle=?

If x = 9 inches what is the area of the shape=?

Formula:

a=l*w

p=2(l+w)

Solution:

p=2(l+w)

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p=10x+8x+18-14

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