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3 years ago

What is the ratio of a pinion gear with 14 teeth to a driven gear with 72 teeth?

Mathematics

1 answer:

kirill [66]3 years ago

4 0

Answer:

Step-by-step explanation:

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Verify the identity. cot(x - pi/2) = -tan(x)

gizmo_the_mogwai [7]

Answer:

See below.

Step-by-step explanation:

$\cot(x-\frac{\pi}{2})=-\tan(x)$

Convert the cotangent to cosine over sine:

$\frac{\cos(x-\frac{\pi}{2} )}{\sin(x-\frac{\pi}{2})} =-\tan(x)$

Use the cofunction identities. The cofunction identities are:

$\sin(x)=\cos(\frac{\pi}{2}-x)\\\cos(x)=\sin(\frac{\pi}{2}-x)$

To convert this, factor out a negative one from the cosine and sine.

$\frac{\cos(-(\frac{\pi}{2}-x ))}{\sin(-(\frac{\pi}{2}-x))} =-\tan(x)$

Recall that since cosine is an even function, we can remove the negative. Since sine is an odd function, we can move the negative outside:

$\frac{\cos((\frac{\pi}{2}-x ))}{-\sin((\frac{\pi}{2}-x))} =-\tan(x)\\-\frac{\sin(x)}{\cos(x)} =-\tan(x)\\-\tan(x)\stackrel{\checkmark}{=}-\tan(x)$

8 0

3 years ago

Solve for x and then find the length of each segment. The measure of segment is equal to the sum of its smaller parts

leva [86]

Answer:

28hueu27ye6ry2u7wyee

8 0

3 years ago

PLEASE HELP ITS DUE IN A FEW MINUTES

denis23 [38]

1. a+3a+4b=5b
2. a+3a=5b-4b
3. 4a=5b-4b
4. 4a=b
a=1/4b
(I think 1/4b is the answer) hope this helps :)

4 0

3 years ago

Read 2 more answers

Hola feliz noche solo hago está pregunta para probar la aplicación cuántos es 7+1

butalik [34]

Answer:

es 8

Step-by-step explanation:

3 0

3 years ago

Written as a simplified polynomial in standard form, what is the result when (3x-1)^2 is subtracted from 4?

nikklg [1K]

Answer:

3(x-1)x(3x+1)

Step-by-step explanation:

3 0

3 years ago