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eimsori [14]
3 years ago
8

If 3cot^2x - 5cotx = -2, then cotx = _____.

Mathematics
1 answer:
stealth61 [152]3 years ago
7 0
3cot²x - 5cotx = -2

Lets pretend cotx = t

3t² - 5t = -2
3t² - 5t + 2 = 0

factor polynomial
(3t-2)(t-1) = 0

3t-2 = 0
t-1 = 0

then "t" which is also cotx is equal to 1 or 2/3



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Need help fast thanks and god bless
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Answer:

275.

Step-by-step explanation:

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y = 35x.

The gradient of the function represented by the the table is

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In 2010, a medical research group reported the results of an experiment to evaluate the effectiveness of acupuncture to treat a
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Derive the equation of the parabola with a focus at (−5, 5) and a directrix of y = −1.
marusya05 [52]

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Explanation:

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The standard form of a parabola is,

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It is given that  the focus of the parabola is (−5, 5).

(h,k+p)=(-5,5)

On comparing both sides we get,

h=-5

k+p=5      .... (1)

The directrix of y = −1.

k-p=-1       .... (2)

Add equation (1) and (2),

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Put this in equation (1),

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Therefore, the equation of parabola is (x+5)^2=12(y-2).

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3 years ago
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