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Mashutka [201]
4 years ago
12

A) find a cartesian equation for the curve described by the given polar equation. r =3 sin g

Mathematics
1 answer:
Radda [10]4 years ago
6 0
Recall that r^2 = x^2 + y^2, so that r = sqrt(x^2+y^2).

                                                                        y
r = 3 sin g becomes    sqrt(x^2+y^2) = 3*-----------------------
                                                                  sqrt(x^2+y^2)

Squaring both sides,

                    9y^2
x^2+y^2 = -----------------
                  x^2 + y^2

If this is correct (and I'm not convinced that it is), then (x^2+y^2)^2 = 9y^2
shows the relationship between x and y.  Can anyone improve on this result?

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Delila earns $108.75 for working 15 hours as a holiday helper wrapping gifts. at this rate ,how much money will she earn if she
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18 hours she earns $130.5
18 times 17.25 it’s $130.5
4 0
3 years ago
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Pls help me with this question
k0ka [10]

Answer:

height = 12 feet

Step-by-step explanation:

r (radius of circle) = 7 ft

pi = 3.14 (in this context)

v = 1/3 * πr^{2} (or pi * radius squared) * h

r squared = 49 ft

v = 1/3 3.14 * 49 * h

v = 1/3 153.86 * h

3v = 153.86 * h

v = 196π

v = 615.44

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3 0
3 years ago
How many solutions are possible for a triangle with A = 113° , a = 15, and b = 8
statuscvo [17]

Answer:

One solution.

Step-by-step explanation:

To determine the number of possible solutions for a triangle with A = 113° , a = 15, and b = 8, we're going to use the law of sines which states that: "<em>When we divide side a by the sine of angle A  it is equal to side b divided by the sine of angle B,  and also equal to side c divided by the sine of angle C</em>".

Using the law of sines we have:

\frac{sin(A)}{a} = \frac{sin(B)}{b}

\frac{sin(113)}{15} = \frac{sin(B)}{8}

Solving for B, we have:

sin(B)=0.4909

∠B = 29.4°

Therefore, the measure of the third angle is: ∠C = 37.6°

There is another angle whose sine is 0.4909 which is 180° - 29.4° = 150.6 degrees. Given that the sum of all three angles of any triangle must be equal to 180 deg, we can't have a triangle with angle B=113° and C=150.6°, because B+C>180.

Therefore, there is one triangle that satisfies the conditions.

7 0
3 years ago
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Answer:

sdcsdcsdcs    

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sdcdsc

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Given that (1,-8) is on the graph of f(x), find the corresponding point for the function 1/2f(x). PLEASE HELP ME. IM BEGGING YOU
scoray [572]

Answer:

The corresponding point is (1,-4)

Step-by-step explanation:

we know that

The point (1,-8) is on the graph of f(x)

so

that means

For x=1, f(1)=-8

therefore

For the function 1/2f(x)

For x=1, 1/2f(1)=-8/2=-4

The corresponding point is (1,-4)

3 0
3 years ago
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