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2 years ago

Find AB, BC, and BC. Round to the nearest tenth

Mathematics

1 answer:

Olegator [25]2 years ago

7 0

Answer:

i need more space to send the pic i did the math tho

Step-by-step explanation:

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Use the inverse function-inverse cofunction

vivado [14]

Answer:

$arccot(x)'=-\frac{1}{1+x^2}$

Step-by-step explanation:

<u>Use implicit differentiation:</u>

$y=arccot(x)$

$cot(y)=x$

$\frac{1}{tan(y)}=x$

$\frac{cos(y)}{sin(y)}=x$

$\frac{dy}{dx}(\frac{cos(y)}{sin(y)})=\frac{dy}{dx}(x)$

$\frac{sin(y)(-sin(y))-cos(y)cos(y)}{sin^2(y)}*\frac{dy}{dx}=1$ (Quotient Rule: $\frac{d}{dx}(\frac{f(x)}{g(x)})=\frac{g(x)f'(x)-f(x)g'(x)}{(g(x))^2}$ )

$\frac{-sin^2(y)-cos^2(y)}{sin^2(y)}*\frac{dy}{dx}=1$

$\frac{-(sin^2(y)+cos^2(y))}{sin^2(y)}*\frac{dy}{dx}=1$

$\frac{-1}{sin^2(y)}*\frac{dy}{dx}=1$

$-csc^2(y)\frac{dy}{dx}=1$

$\frac{dy}{dx}=\frac{1}{-csc^2(y)}$

$\frac{dy}{dx}=-sin^2(y)$

$\frac{dy}{dx}=-sin^2(arccot(x))$

See the attached picture to understand how to evaluate the mixed composition of trig functions using a right triangle.

Therefore, the derivative of arccot(x) is $-\frac{1}{\sqrt{1+x^2}}$ .

4 0

2 years ago

Please Help,This is hard. If you could do it step by step that would be Great :)

Anna11 [10]

A. Bc a negative times a negative would be positive

C. Bc it would equal 0 and zero is not negative.

1*-7=-7 it wants a negative value so times it by one keeps it negative and same with if it is Multiplied by 7

8 0

3 years ago

Read 2 more answers

The function f(x) is given by the set of ordered pairs. {(1,0), (–10,2), (0,6), (3,17), (–2,–1)} Which equation is true? f of ne

Rudik [331]

Answer:

f(0)=6

Step-by-step explanation:

When representing function's values by set of ordered pairs, the first one correspond to the x value and the second to the image or "y" value.

When you read f(0) means "when x is 0" then the 6 is the value of the function or the image.

7 0

3 years ago

Read 2 more answers

Write in descending order.420t + 201 to the 3rd power -210t to the 2nd power

nexus9112 [7]

To answer this, we need to see the polynomial. Descending order is in a way that the first term of the polynomial will be three, the second (in descending order, two....and so on).

420t+20t3-210t2

In descending order is:

20t^3 - 210t^2 + 420t

So, the option is number two.

4 0

9 months ago

The solution set for 7q2 − 28 = 0 is { }. (Separate the solutions with a comma) NextReset

SVETLANKA909090 [29]

7q^2 - 28 = 0

7q^2 = 28
q^2 = 4
q = +/-2
solution set is {-2,2}

6 0

2 years ago

Read 2 more answers