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
Virty [35]
3 years ago
6

Prove, cotx -tanx= 2 cot2x

Mathematics
1 answer:
ra1l [238]3 years ago
4 0

Step-by-step explanation:

<em>cotx-</em><em> </em><em>tanx</em><em>=</em><em> </em><em>2cot2x</em>

<em>L.H.S</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>cosx</em><em>/</em><em>sinx-</em><em> </em><em>sinx</em><em>/</em><em>cosx</em><em> </em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>(</em><em>cos</em><em>²</em><em>x-</em><em> </em><em>sin</em><em>²</em><em>x</em><em>)</em><em>/</em><em> </em><em>sinxcosx</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>[</em><em> </em><em>cos</em><em>²</em><em>x-</em><em>(</em><em>1</em><em>-cos</em><em>²</em><em>x</em><em>)</em><em>]</em><em>/</em><em>sinxcosx</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>(</em><em> </em><em>2cos</em><em>²</em><em>x-1</em><em>)</em><em>/</em><em>sinxcosx</em>

<em> </em><em> </em><em> </em><em>2cosx</em><em>/</em><em> </em><em>2sinxcosx</em>

<em> </em><em> </em><em> </em><em>2cot2x</em>

You might be interested in
How do i find the volume of these similar solids? round to the nearest tenth HELP
FromTheMoon [43]

Answer:

The volume of the larger solid is 592.6\ mm^3

Step-by-step explanation:

<u><em>The question is</em></u>

If these solids are similar, find the volume of the larger solid

step 1      

Find the scale factor

we know that

If two solids are similar, then the ratio of its corresponding sides is proportional and this ratio is called the scale factor

Let

x ----> the height of the larger solid in mm

y ----> the height of the smaller solid in mm

z ---> the scale factor

z=\frac{x}{y}

we have

x=4\ mm\\y=3\ mm

substitute

z=\frac{4}{3} ---> scale factor

step 2

Find the volume of the larger solid

we know that

If two solids are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

x ----> the volume of the larger solid in cubic millimeters

y ----> the volume of the smaller solid in in cubic millimeters

z ---> the scale factor

z^3=\frac{x}{y}

we have

z=\frac{4}{3}

y=250\ mm^3

substitute the values

(\frac{4}{3})^3=\frac{x}{250}

solve for x

(\frac{64}{27})=\frac{x}{250}

x=250(\frac{64}{27})

x=592.6\ mm^3

4 0
3 years ago
What are natural numbers in a set less than 3
sergeinik [125]
Natural number are basically " counting numbers ". They have no decimals, no fractions, and no negative numbers. It is debated whether 0 is included.

so ur natural numbers less then 3 are {1,2 }...not 100% sure if u include 0. I do not think u do.
4 0
3 years ago
Please help me with steps ​
Kitty [74]

Answer:

12 if x_y

Step-by-step explanation:

12= 3x4 (I'm sorry for this, I need points)

8 0
3 years ago
HELPP!! PLEASE ITS DUE SOON
Debora [2.8K]

Answer:

100%

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Calculate the area of a circle with a radius of 10 cm use pie
Advocard [28]
100pi or 100x3.14159
3 0
3 years ago
Other questions:
  • What is 975 times 65
    10·1 answer
  • A rectangle has an area of 56 square centimeters it's length is 8 centimeters what's the width
    13·2 answers
  • The prism shown has a volume ​
    6·2 answers
  • Weekly math review 3:3
    9·1 answer
  • For every 24 minutes of
    9·2 answers
  • Last week at Best Bargain, 75% of the computers sold
    15·2 answers
  • Please pls plsss help me check 15 and 16​
    9·1 answer
  • Plz help I need with question I give thanks
    8·1 answer
  • 6) Sally traveled 352.5 miles on 13 gallons of gas. Set up and solve to proportion to find how many miles she can travel on 18 g
    6·1 answer
  • Using the definition of the​ derivative, find​ f'(x). Then find ​f(2​), ​f(0), and ​f(​3) when the derivative exists. ​f(x)=8/x
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!