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kolbaska11 [484]
3 years ago
9

Plz help I'll mark brainliest.

Mathematics
2 answers:
irga5000 [103]3 years ago
4 0

Answer:

right triangles

always

Step-by-step explanation:

Similar triangles are obtained by rise/run

Since the ratio for all triangles are the same, they have the same slope.

marishachu [46]3 years ago
3 0

Answer:right triangles

always

Step-by-step explanation:

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Tan(x+pi/2)= negative cot x
DIA [1.3K]
I'm only going to alter the left hand side. The right side will stay the same the entire time

I'll use the identity tan(x) = sin(x)/cos(x) and cot(x) = cos(x)/sin(x)
I'll also use sin(x+y) = sin(x)cos(y)+cos(x)sin(y) and cos(x+y) = cos(x)cos(y)-sin(x)sin(y)

So with that in mind, this is how the steps would look:

tan(x+pi/2) = -cot x
sin(x+pi/2)/cos(x+pi/2) = -cot x
(sin(x)cos(pi/2)+cos(x)sin(pi/2))/(cos(x)cos(pi/2)-sin(x)sin(pi/2)) = -cot x
(sin(x)*0+cos(x)*1)/(cos(x)*0-sin(x)*1) = -cot x
(0+cos(x))/(-sin(x)-0) = -cot x
(cos(x))/(-sin(x)) = -cot x
-cot x = -cot x

Identity is confirmed

6 0
3 years ago
Mrs. Savino runs 3 miles in 28 minutes. At this rate, how many minutes would it take her to run 15 miles? * Need it ASAP​
VashaNatasha [74]

Answer:

she would take 140 minutes to run 15 miles

Step-by-step explanation:

28 X 5 os equal to 140

7 0
2 years ago
Read 2 more answers
Malik’s solution to the equation 2/5x-4y=10 , when x=60, is shown below.
zhenek [66]

Answer:

D. Malik substituted 60 for y instead of x.

Step-by-step explanation:

Look closely at the step by step process.

4 0
3 years ago
Read 2 more answers
PLEASE HELP
kumpel [21]
10x+5. Hope this helped
7 0
2 years ago
Read 2 more answers
Can someone please check this?
hodyreva [135]
That’s right cuz there’s 2 cubes in height and if one cube is 4ft then 2 would be 8ft
6 0
8 months ago
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