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ddd [48]
3 years ago
11

2+cotA=1 homework help

Mathematics
1 answer:
Alex Ar [27]3 years ago
3 0
2+\cot A=1\implies \cot A=-1\implies \tan A=-1

This happens whenever A=\dfrac{3\pi}4 or A=\dfrac{7\pi}4. More generally, \tan A=-1 whenever you start with one of these angles and add any multiple of \pi, so the general solution would be A=\dfrac{3\pi}4+n\pi, where n is any integer. (Notice that when n=1, you end up with \dfrac{7\pi}4.)
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Consider the parabola whose equation is y=x^2-4x and the line whose equation is y=2x+b, where b is some unknown constant
Vikki [24]

Answer:

Step-by-step explanation:

Is there a question somewhere in there?

6 0
3 years ago
An oil tank has to be drained for maintenance. The tank is shaped like a cylinder that is 5 ft long with a diameter of 1.8 ft .
dangina [55]
\bf \textit{volume of a cylinder}\\\\
V=\pi r^2 h\qquad 
\begin{cases}
r=radius=\frac{diameter}{2}\\
h=height\\
----------\\
diameter=1.8\\
r=\frac{1.8}{2}=0.9\\
h=5
\end{cases}\implies V=\pi \cdot 0.9^2\cdot 5\\\\
-------------------------------\\\\
\textit{is draining at }\boxed{2.1}\ \frac{ft^3}{min}\textit{ , it has a total of }\boxed{\pi \cdot 0.9^2\cdot 5} \ ft^3
\\\\\\
\textit{it'll take }\cfrac{\pi \cdot 0.9^2\cdot 5}{2.1}\ minutes
3 0
3 years ago
Hiiii
bezimeni [28]

Answer:

5 and -5 (±5)

Step-by-step explanation:

x²-8=17

x²=25

√x²=√25

x=±5

3 0
3 years ago
Read 2 more answers
BRAINLIEST!!!
vichka [17]
I believe the answer is $17500
3 0
3 years ago
7.
pantera1 [17]

(2h – 3)(3h + 4) is the same thing as

2h(3h + 4) - 3(3h + 4)

6h^2 + 8h - 9h - 12

6h^2 - h - 12

Answer B.

4 0
3 years ago
Read 2 more answers
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