1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
NeTakaya
3 years ago
14

Use the unit circle to find the value of cot (–270°). Question 3 options: cot (–270°) = 1 cot (–270°) = –1 cot (–270°) = 0 undef

ined
Question 3 options:

cot (–270°) = 1

cot (–270°) = –1

cot (–270°) = 0

undefined
Mathematics
1 answer:
aivan3 [116]3 years ago
7 0

Answer:

cot(-270) = 0

Step-by-step explanation:

given cot ( -270)

In trigonometry function we will use cot ( -x) = -cotx

so cot (-270) = - cot270

<u>trigonometry table</u>

          II quadrant                                I quadrant ( All positive)                                                                              

 sin θ            90+θ                                                    90 -θ

<u>  cosec</u> θ <u>     180-θ                                                   360+θ</u>

            third quadrant                                fourth quadrant

 tan θ            180+θ                                       cos θ          270+θ

 cot θ       270 - θ                                          sec θ       360-θ                                    

Given

cot (-270) = -cot ( 270)

                = - cot ( 180 + 90) (third quadrant above table)

                = -cot 90 =0 ( cot θ positive in third quadrant

<u>Final answer</u>:-

cot(-270) =0

You might be interested in
a sphere of radius 5 cm is melted down and made into a solid cube. Find the length of a side of the cube.​
Amanda [17]

Answer:

the volume of sphere will be equal to that of the volume of cube as change in shape doesn't effect the volume.

using,

Volume of sphere = volume of cube.

= a^3

Step-by-step explanation:

5 0
3 years ago
A veterinarian divided 4/5 of a bottle of medicine equally among 4 sick cats. How much did she give each sick cat?
boyakko [2]
I think it’s 1/5 or 3 1/5
4 0
3 years ago
How do I Express the inequality x &lt; 7 using interval notation.
Sedaia [141]

Answer:  (-\infty, 7)

You can write this as (-infinity, 7) if you aren't able to use the infinity symbol.

====================================================

Explanation:

Think of x < 7 as writing -\infty < x < 7

So x is between negative infinity and 7, excluding both endpoints.

To write -\infty < x < 7 in interval notation, we write (-\infty, 7)

The curved parenthesis tell us to exclude the endpoint.

7 0
3 years ago
One of the roots of the quadratic equation 4mnx^2 – 6m^2x – 6n^2x + 9mn = 0 (m, n ≠ 0) is a)-3m/2n b)3m/2n c)2m/3n d)-2m/3n
maxonik [38]

Answer:

B.\ \frac{3m}{2n}

Step-by-step explanation:

Given

4mnx^2 - 6m^2x - 6n^2x + 9mn = 0\ (m, n \neq  0)

Required

Calculate one of the root of the equation

4mnx^2 - 6m^2x - 6n^2x + 9mn = 0

Factorize

2mx(2nx - 3m) -3n(2nx - 3m) = 0

(2mx - 3n)(2nx - 3m) = 0

Split equation

2mx - 3n = 0\ or\ 2nx - 3m = 0

Make x the subject of formula in both expressions

2mx = 3n\ or\ 2nx = 3m

x = \frac{3n}{2m}\ or\ x = \frac{3m}{2n}

<em>From the list of given options, one of the roots of the equation is</em> \frac{3m}{2n}

4 0
3 years ago
Help me please I am very confused T-T
Daniel [21]
I believe you do 180 - 149 because it's a linear pair, it makes a t shape!!
8 0
2 years ago
Read 2 more answers
Other questions:
  • 2.37E4 – 3.5E3<br> A) 2.02 x 104<br> A<br> B) 1.13 x 103<br> C) 5.87 x 104<br> D) 2.02 x 103
    11·1 answer
  • Graph the following lines and write the equation in slope-intercept form. Through the point (2,−4) with y-intercept of −2.
    11·1 answer
  • Mr Gomez builds a path. He uses 22 pieces of slate that are 1.3 meters long each, and one piece of slate that is 2.5 meters long
    5·1 answer
  • Suppose that at the original income of $30 the price of a loaf of bread increased to $3.00 and the price of a jar of peanut butt
    9·1 answer
  • 14. At what speed in miles per hour will a bicycle travel if the rider can cause the 26-inch diameter wheel to rotate 90 revolut
    7·1 answer
  • Noah bought 5 CDs and a DVD for a total of $57. The DVD cost $12. The CDs were each the same price. How much did Noah pay for ea
    11·1 answer
  • Find the Surface Area of <br> 8 m<br> 5 m<br> 3 m
    15·1 answer
  • 3(x−1) + 7=11 what is x
    10·2 answers
  • What is the independent variable of<br><br> y=12x−2
    14·1 answer
  • Hi everyone how are you all feel free to take the fre points or talk if ya wanna
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!