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crimeas [40]
3 years ago
9

Use the unit circle to find the value of tan (-180º).

Mathematics
1 answer:
madreJ [45]3 years ago
7 0

Answer:

B. tan (-180°) = 0

Step-by-step explanation:

Tangent is the ratio of opposite to adjacent to an angle

From the unit circle; the opposite to our angle -180° is 0

The adjacent along the x-axis is 1

Therefore;

Tan (-180°) = 0/1

              = 0

Therefore; Tan (-180°) is 0

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What is the sum of the geometric sequence −4, 24, −144, ... if there are 8 terms?
Helga [31]

Answer:

The sum of 8 geometric sequence is 959780

Step-by-step explanation:

We are given

this sequence is geometric

-4 , 24 , -144

First term is -4

so, a_1=-4

now, we can find common ratio

r=\frac{24}{-4}=-6

we can use formula

S_n=a_1(\frac{1-r^n}{1-r} )

n=8

now, we can plug values

S_8=-4(\frac{1-(-6)^{8}}{1+6} )

now, we can simplify it

and we get

S_8=959780

4 0
4 years ago
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Alenkasestr [34]
I’m pretty sure the answer is C
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3 years ago
olutions At the snack bar, hot dogs cost $4 each and bottled water costs $2 each. In the first business hour of the day, less th
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To solve the problem it is trial and error since we don’t know how many hotdogs and bottled water was sold. To trim down to problem, negative values and decimal values are not included because there is no negative amount and a decimal amount.

The equation is

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At (1, 3)

4(1) + 2(3) > 12

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At (2,2)

4(2) + 2(2) > 12

12> 12 wrong


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4 years ago
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