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3 years ago

13

HELP ASAP!!!! CROSS-SECTIONS

2 answers:

ella [17]3 years ago

4 0

The answer to your problem is d hope this helps you

ser-zykov [4K]3 years ago

3 0

Answer:

Step-by-step explanation:

These problems where you are not told what basic shape you are working with and have to assume some properties, just should not be asked. You are to assume that this is a parallelepiped.

The answer that you want is B

The length of the rectangle is 8 in given along the bottom. The top is also 8 in. The width of that rectangle is 4. The rectangle is the top of the drawing.

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To prove :One plus cot square theta into tan theta by sec square theta = cot theta

pickupchik [31]

we are given

$\frac{(1+cot^2(\theta))*tan(\theta)}{sec^2(\theta)} =cot(\theta)$

We will simplify left side and make it equal to right side

Left side:

$\frac{(1+cot^2(\theta))*tan(\theta)}{sec^2(\theta)}$

we can use trigonometric identity

$1+cot^2(\theta)=csc^2(\theta)$

we can replace it

$\frac{(csc^2(\theta))*tan(\theta)}{sec^2(\theta)}$

we know that

csc=1/sin and sec=1/cos

so, we can replace it

and we get

$\frac{cos^2(\theta)tan(\theta)}{sin^2(\theta)}$

now, we know that

tan =sin/cos

$\frac{cos^2(\theta)*sin(\theta)}{sin^2(\theta)*cos(\theta)}$

we can simplify it

and we get

$\frac{cos(\theta)}{sin(\theta)}$

we can also write it as

$=cot(\theta)$

Right Side:

$cot(\theta)$

we can see that

left side = right side

so,

$\frac{(1+cot^2(\theta))*tan(\theta)}{sec^2(\theta)} =cot(\theta)$ ......Answer

6 0

3 years ago

Which coordinate plane shows the graph of f(x)=-2x+3

Mice21 [21]

The answer would be 7

5 0

4 years ago

14 + (-26) - 14 -26

nikitadnepr [17]

Answer:

-52

step by step

7 0

3 years ago

Y varies directly as x. When x = 9, y = 27<br><br>Find y when x = 27

Ivenika [448]

Answer:

y/x, 27/9 = 3, 3 = y/27, y = 81.

Step-by-step explanation:

7 0

3 years ago

Enter the unknown value that makes this statement true 20% of n is 120

ohaa [14]

Answer:

600

Step-by-step explanation:

by dividing 120 by 20% or .2 we see that it is equal to 600

120/0.2=600

this can then be checked by multiplying 600 by .2 and getting 120

4 0

3 years ago