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Prove that sin 8x cosx - sin6x cos 3x÷ cos2x cosx - sin 4x sin 3x= tan 2x

Posted by Ch Harsh Sangwan 6 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

What is dative bond?

Posted by Dimple Bawa 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Arpit Verma 6 years, 6 months ago

An example of a dative covalent bond is provided by the interaction between a molecule of ammonia, a Lewis base with a lone pair of electrons on the nitrogen atom, and boron trifluoride, a Lewis acid by virtue of the boron atom having an incomplete octet of electrons.

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If 2L of N2 is mixed with 2L of H2 at a constant temperature and pressure, then what will be the volume of NH3 formed

Posted by Sundarm Jha 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

How many number of atoms are present in 52u of Helium

Posted by Sundarm Jha 6 years, 6 months ago

CBSE > Class 11 > Chemistry

3 answers

Rohan Kumar 6 years, 6 months ago

13 atoms

1Thank You

It'Ş.Mə. Sshăvî_ 6 years, 6 months ago

13 atoms

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Jashan Aulakh 6 years, 6 months ago

4u of helium = 1 atom 1u of helium = 1/4 atom 52u of helium =52×1/4 =13 atoms

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What do you understand by the expression good old days?

Posted by Sabreen Ahmed 6 years, 6 months ago

CBSE > Class 11 > English Core

0 answers

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Peace is costly but it worth the expense what is the ironical significance of this statement

Posted by Kanchana Iyamanth 6 years, 6 months ago

CBSE > Class 11 > English Core

1 answers

Ruchitha Kanakanallu 5 years, 1 month ago

peace is costly but it is worth the expense

3Thank You

ANSWER

1st chapter main points

Posted by Ritika Nogia 6 years, 6 months ago

CBSE > Class 11 > English Core

0 answers

ANSWER

What is the difference between electro magnetic waves and matter waves

Posted by Deepak Bhatt 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Yogita Ingle 6 years, 6 months ago

S.No.	Electromagnetic Waves	Matter Waves
1	Associated with electrical and magnetic fields.	Not associated with electrical and magnetic fields.
2	Can be emitted or radiated in space.	Neither radiated into space nor emitted by the particles. These are simply associated with the particles.
3	Travel with the same velocity.	Travel with different velocities.
4	Velocity is equal to that of the velocity of light i.e. 3 x 10 8 ms-1.	Velocity is different from that of light.
5	The wavelength is given by lambda = c/v = h/mc.	The wavelength is given by lambda = h/mw = h/p.

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ANSWER

format of आलेख

Posted by Mehak Behl 6 years, 6 months ago

CBSE > Class 11 > हिंदी कोर

1 answers

Kshtij Arya 6 years, 6 months ago

Just a diagram and few lines about topic below it?

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If 60 percentage of students pass the test find minimum marks obtained by a passed candidate marks 10-20 20-30 30-40 40-50 50-60 60-70. frequency 10 20 10 7 2 1

Posted by Prince Garg 6 years, 6 months ago

CBSE > Class 11 > Economics

0 answers

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What is mean , median and mode

Posted by Prince Garg 6 years, 6 months ago

CBSE > Class 11 > Economics

2 answers

Sia ? 6 years, 6 months ago

Mean : The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.
Median : The middle number; found by ordering all data points and picking out the one in the middle (or if there are two middle numbers, taking the mean of those two numbers).
Mode : The number which appears most often in a set of numbers.

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Banak . 6 years, 6 months ago

Mean The mean is the average of all numbers and is sometimes called the arithmetic mean. To calculate mean, add together all of the numbers in a set and then divide the sum by the total count of numbers. Median In the data center, means and medians are often tracked over time to spot trends, which inform capacity planning or power cost predictions.The statistical median is the middle number in a sequence of numbers. To find the median, organize each number in order by size. Mode The mode is the number that occurs most often within a set of numbers. Hope it was helpful...?

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Explain the two different ways of biodiversity conservation

Posted by Aliya Joyson 6 years, 6 months ago

CBSE > Class 11 > Biology

1 answers

Sia ? 6 years, 6 months ago

There are two basic approaches for the conservation of biodiversity

Ex situ conservation (off-site conservation)
In situ conservation (on-site conservation)

In situ conservation, It is the conservation and protection of biodiversity in its natural habitat.

It helps in recovering population in the surroundings where they have developed their distinctive features.
Example National parks, biosphere reserves, wildlife sanctuaries.

Ex situ conservation It is the conservation of selected rare plants and animals in places outside their natural habitat

It helps in recovering population or preventing their extinction under conditions that closely resemble their natural habitats.
Example Botanical gardens, zoological parks, wildlife safari parks, gene banks, etc.

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Is there any practical to perform

Posted by Gaurav Tank 6 years, 6 months ago

CBSE > Class 11 > Physical Education

0 answers

ANSWER

What are the main geographical features of mesopotamia?

Posted by Dolly Rawat 6 years, 6 months ago

CBSE > Class 11 > History

0 answers

ANSWER

Define port along with some examples

Posted by Sanjeev Sharma 6 years, 6 months ago

CBSE > Class 11 > Computer Science

0 answers

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A person Travels along east and 10 metre along North then 10 root2 metre along North East find his displacement

Posted by Aditya Ranjan 6 years, 6 months ago

CBSE > Class 11 > Mathematics

2 answers

Tanvi Chauhan?? 6 years, 6 months ago

Sorry this answer is wrong I supposed the direction East instead of North east

0Thank You

Tanvi Chauhan?? 6 years, 6 months ago

By pythagoras (10)²+(10√2)²=100+300=√400=20m Displacement=20m

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Sports performance related careers

Posted by Dowke Lepcha 6 years, 6 months ago

CBSE > Class 11 > Physical Education

0 answers

ANSWER

Write detailed charcter sketch of uncle khusrove

Posted by Sukhman Jot 6 years, 6 months ago

CBSE > Class 11 > English Core

1 answers

Jashan Aulakh 6 years, 6 months ago

Uncle khosrove is a character from the story, "The summer of the white horse" written by William saroyan. This character strikes as funny with his immediate dismissal of any problem with a "It's no harm, pay no attention to it." Uncle khosrove is a uncle of the protagonist Aram. He is notorious for his bad temper. He is highly impatient and set aside any problem without even listening to the details. When his son reported that their house is on fire, he shouted the same" It's no harm, pay no attention to it." Now it is a matter of debate whether this is because he is slightly mad or he is just bad temper and impatient.

2Thank You

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Write a report on an accident invoving a gas tanker

Posted by Sarthak Sangal 6 years, 6 months ago

CBSE > Class 11 > English Core

2 answers

Jashan Aulakh 6 years, 6 months ago

U can search it on internet... B'coz we cannot type so long...

1Thank You

@ Aashu 6 years, 6 months ago

How can we type ..so long here

3Thank You

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Prove that 3tan^2x + 2 root3 tanx -3=0

Posted by Jashan Aulakh 6 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Eid Mubarak

Posted by Mohd Zubair 6 years, 6 months ago

CBSE > Class 11 > शारीरिक शिक्षा

0 answers

ANSWER

Ten services name and ten business name.

Posted by Srishti S 6 years, 6 months ago

CBSE > Class 11 > Business Studies

0 answers

ANSWER

A body starting from rest,accelerates at a constant rate a m/s² for some time after which it decelerates at a constant rate b/m s² to come to rest finally.If the total time elapsed is t sec,the maximum velocity attained by the body is what?

Posted by Tanvi Chauhan?? 6 years, 6 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

If a ball is thrown vertically upwards with speed u,the distance covered during the last t seconds of its ascent is?

Posted by Tanvi Chauhan?? 6 years, 6 months ago

CBSE > Class 11 > Physics

2 answers

Sia ? 6 years, 6 months ago

Let body takes T sec to reach maximum height.
We know, v = u - gT
At the highest point, v = 0
T = {tex}\frac ug{/tex} ………… (i)
Velocity attained by Body in (T - t) s,
v = u - g(T - t)
= u - gT + gt = u - g{tex}\frac ug{/tex} + gt
or v = gt......(ii)
Now, Distance travelled in last t sec of its ascent
s = (gt)t -{tex}\frac 12{/tex}gt² = {tex}\frac 12{/tex}gt²