Ask question

Ask question

All categories

3 years ago

13

He cartesian coordinates of a point are given. (a) (−9, 9) (i) find polar coordinates (r, θ) of the point, where r > 0 and 0

≤ θ < 2π.

1 answer:

olga_2 [115]3 years ago

5 0

Radius =
9^2 + 9^2 = d^2
d = sqrt(162), about 12.73

theta =
atan(9/-9)

is 45°, but in 2nd quad, so add 90

(12.727, 135°)

You might be interested in

Can someone help I’m confused

exis [7]

Answer:

D and E

Step-by-step explanation:

Let's double check:

D. 9 ÷ 3 = 3

E. 4 × 9 = 36

---------------------------------------------------------------------------------------------------------------

Have a great summer :)

3 0

3 years ago

Read 2 more answers

What is the greatest possible error when measuring to the nearest quarter of an inch? 1/8 in. 1/4 in. 1/2 in.

Iteru [2.4K]

The greatest possible error is one half of the measuring unit you're using.

Multiply the unit you use by 1/2:

$\frac{1}{4} * \frac{1}{2} = \frac{1}{8}$

The greatest possible error will be 1/8 inch.

4 0

3 years ago

Read 2 more answers

Write the integer as a product of two integers such that one of the factors is a perfect square. 27

butalik [34]

Hope this helps....

The factors of 27 are all #'s btwn -27 and 27 that / 27 evenly.

-27, -9, -3, -1, 1, 3, 9, 27

3 0

4 years ago

Find the slope of the line going through the points (-1,0) and

pav-90 [236]

Answer:

Slope = -2

Step-by-step explanation:

Slope = $\frac{y^{2}-y^{1} }{x^{2} -x^{1} }$

Slope = $\frac{-4-0}{1-(-1)}=\frac{-4}{2}=-2$

5 0

3 years ago

3. If the line tangent to the graph of the function f at the point (1,7) also passes through the point

Usimov [2.4K]

Answer:

f'(-1)= 3

Step-by-step explanation:

slope = (y2 - y1)/(x2 - x1)= (7-(-2))/(1-(-2))=9/3=3

Slope of the tangent line in the given point equals f' at this point.

So,

f'(-1)= 3

5 0

3 years ago