CBSE Board | Homework Help

Write 1+cosx= 2 cos^2(x/2) Then (x+sinx)/(1+cosx )= (1/2)xsec^2(x/2) (apply integration by parts to evaluate) + sinx/2cos^2(x/2)(Apply sinx =2sin(x/2)cos(x/2) to evaluate)

1 Thank You

Sahil Kumar 5 years ago (9843583)

I think the question is reversed by mistake and it would be like "integration of function (1+cosx/ x+sinx) w.r.t x from limit 0 to π, so that we can able to substitute t = (x+sinx) and it's differential form would be (1+cosx). Check please.

2 Thank You

Prakhar Chouksey 5 years ago (5647004)

Substitute 1+cosx=t

5 Thank You

ANSWER

What is package technology?What was it's results?

Posted by Shubham Chaudhary 4 years, 8 months ago (8428231)

CBSE > Class 10 > Social Science

1 answers

Sia ? 4 years, 8 months ago (6945213)

package technology refers to the Green Revolution introduced in agriculture. the whole package hat comes with the. High yielding varieties of seeds. modern equipments for cultivation the soil. organic fertilizers.

0 Thank You

ANSWER

give the character sketch of Charley in the lesson the third level

Posted by Manish Dhritlahre 5 years ago (10385437)

CBSE > Class 12 > English Core

1 answers

Preeti Yadav 5 years ago (9895537)

You can explain points 1.his hobbies 2.his stressful condition 3.hardworker

0 Thank You

ANSWER

Can anyone pls tell me chapter wise weightage for all subjects??

Posted by Shruti Singh 5 years ago (9316187)

CBSE > Class 12 > English Core

1 answers

Student Of The Year 5 years ago (8440771)

Download revised sallybus of all subject from this app.

3 Thank You

ANSWER

What is networking

Posted by Ayush Tiwari 5 years ago (10215780)

CBSE > Class 10 > Information Technology (402)

3 answers

Sunil Bhadouriya 5 years ago (10013131)

networking means the connection between two or more devices in a way so they can share data ,communicate etc

0 Thank You

Rahul Yadav 5 years ago (10171370)

A networking is a

5 Thank You

Secret ??? 5 years ago (10356051)

Connecting different or similar type of devices such as mobile phones, computers, printers etc to share data and other resources is called networking

3 Thank You

ANSWER

What is public revolt

Posted by Rekha Kumari 5 years ago (10380587)

CBSE > Class 10 > Social Science

1 answers

Secret ??? 5 years ago (10356051)

Rebellion, uprising, or insurrection is a refusal of obedience or order. It refers to the open resistance against the orders of an established authority. When it is done by massive people against government or any law it is referred as public revolt.

1 Thank You

ANSWER

Names of festivals and seasons in Sanskrit

Posted by Monishkumar Arasakumar 4 years, 7 months ago (3980309)

CBSE > Class 07 > हिंदी

1 answers

Sia ? 4 years, 7 months ago (6945213)

^Season	^Sanskrit	^Hindi
^{वसन्त m.}	^{चैत्र}	^चैत	^{March- April}
^Spring	^{वैशाख}	^{बैसाख}	^{April- May}
^{ग्रीष्म/ गरमी f.}	^{ज्येष्ठ}	^जेठ	^{May – June}
^Summer	^{अाषाढ़}	^अषाढ़	^{June -July}
^{वर्षा/ बरसात f.}	^{श्रावण}	^सावन	^{July – August}
^Rains	^{भाद्रपद}	^{भादों}	^{August- September}
^{शरत/ पतझड़ m.}	^{आश्विन}	^{क्वार}	^{September- October}
^Autumn	^{कार्तिक}	^{कातिक}	^{October- November}
^{हेमन्त m.}	^{आग्रहायण}	^अगहन	^{November- December}
^Winter	^पौष	^पूस	^{December- January}
^{शिशिर m.}	^माघ	^माघ	^{January- February}
^{Cool Season}	^{फाल्गुन}	^{फागुन}	^{February- March}

0 Thank You

ANSWER

Letter to principal about experience of online classes

Posted by Aradhya Purohit 4 years, 7 months ago (10328811)

CBSE > Class 03 > English

1 answers

Sia ? 4 years, 7 months ago (6945213)

To
The Principal,

Date- June 7,2021

Respected sir,

I Raj is going to state that the experience of online claases was nice because it helps me to learn many things example-discipline, hard work, honesty etc.Sir, I aslo want state about the teachers efforts that they have help us to learn about the studies. I am so happy that becuase of this online class has maded my brain so sharped that I solved many difficult questions.

Therefore sir,please make more efforts to improve the online classes.

Your obident student
Raj

0 Thank You

ANSWER

How many elements should we learn from the modern periodic table, well I learnt 30 elements, is it enough?

Posted by Aman Kumar 5 years ago (4127661)

CBSE > Class 10 > Science

4 answers

Misty Chan 5 years ago (9639887)

Vaise toh 20 tk yaane ne ki calcium tk agr uske baad aate h exam h toh m dete h at. number element ka pr lekin 20 tk toh achi tarah yaad hone chahiye Well done if u have learnt till 30 at last it will help u only

0 Thank You

Khushi Chowdhary 5 years ago (8970559)

Yes,it is enough for class 10th

0 Thank You

Kritika Rajpal 5 years ago (10386096)

Yess

0 Thank You

Secret ??? 5 years ago (10356051)

Yes atomic no Upto 30 is enough fot 10th

0 Thank You

ANSWER

Slouching

Posted by Vishakha Raj 5 years ago (10371592)

CBSE > Class 10 > English Language and Literature

3 answers

Sumaila Ali Choudhary??? 5 years ago (8597425)

How to remove this habit

0 Thank You

Sakeri Ashutosh 5 years ago (7159826)

to sit or stand with an awkward, drooping posture. to move or walk with loosely drooping body and careless gait. to have a droop or downward bend, as a hat

1 Thank You

Secret ??? 5 years ago (10356051)

to sit, stand or walk in a lazy way, with your head and shoulders hanging down

1 Thank You

ANSWER

Find the 10 th term of the AP whose sum of n term is given by 2n^2 +3n

Posted by @/<$#!T Just Own 5 years ago (9479104)

CBSE > Class 10 > Mathematics

3 answers

Anisha ✌️ .. 5 years ago (10328894)

ANSWER S n =2n 2 +3n We know that nth term of AP is given by a n =S n −S n−1 ⟹a n =2n 2 +3n−2(n−1) 2 −3(n−1) ⟹a n =4n+1 Tenth term=a 10 =4×10+1 ⟹a 10 =41

0 Thank You

Shubham Chaudhary 5 years ago (8428231)

A=S1= 2×1^2+3×1=5 A2 = S2-S1 =( 2×2^2+3×2)-5 =14-5=9 ..........d=a2 - a1 = 9-5=4 a10= a + (n-1)d ........5+(10-1)×4 .........5+9×4=5+36=41 A10 =41

0 Thank You

Secret ??? 5 years ago (10356051)

Sn=2n²+3n, we know An=Sn-Sn-1(n is at foot and - 1 is from n)....... A10 =S10 - S9........ A10 =2×10²+3×10 - 2×9-3×9........... An=200+30-18-27........ An=185

0 Thank You

ANSWER

Which is the father of GK

Posted by Suhani Suhani 5 years ago (10352647)

CBSE > Class 05 > General Knowledge

0 answers

ANSWER

What is menstrual cycle and explain their all phase

Posted by Akansha Chaudhry 5 years ago (10200691)

CBSE > Class 12 > Biology

2 answers

Itz ?? ?? 5 years ago (5125271)

Je agr aise theortical ratna ho to kahi bhi mil ke ga Best source-google Mai apne way se bta deta hu usse shayad Or jayada aa je smjh... So, menstrual cycle is defined as the series of cyclic changes taking place in uterus of female.. To isme hota kuch aisa hai ki na jese har month jo endometrial wall hai na vo Apne ap ko embryo ko implant krne ke liye develop krti hai.. Ye thin layer hoti hai or jb rajkumar yaani bole to sperm nahi aata ovulation period me to ye endometrial wall shed krne lgti hai..Fer vo jo ovum hota hai jo ab mar chuka hota hai vo bhi ishi path se blood ke saath bahr aa jata hai.. Baaki ye females me near about 50 years ki age tk hota hai.. Or ek baat dhyaan dein ki yeh pregnancy ke liye kaafi important hai kyonki agr endometrial wall nyi ni bnegi to embryo implant ni hoga is krke aisa hota hai... Hope it helps❤❤ Don't forget to leave thanks?? ???_????

4 Thank You

Sunaina Bhukta 5 years ago (9126202)

The menstrual cycle is complex and controlled by many different glands and the hormones that these glands produce. The four phases of the menstrual cycle are menstruatio .n, the follicular phase, ovulation and the luteal phase. Common menstrual problems include heavy or painful periods and premenstrual syndrome (PMS). Knowing when in the menstrual cycle a woman is most likely to conceive can increase the chance of pregnancy.

2 Thank You

ANSWER

Which tag is used to create a row in table

Posted by Jyoti Yadav 5 years ago (10359514)

CBSE > Class 10 > Computer Applications (165)

3 answers

Ritika Sahu 4 years, 10 months ago (10517468)

Tr tag

0 Thank You

Kushagra Kesharwani 4 years, 11 months ago (9015280)

tag

0 Thank You

Sweta Mishra 4 years, 11 months ago (10128336)

0 Thank You

ANSWER

Which book should I prefect to prepare for boards

Posted by Ishita Yadav 5 years ago (10385020)

CBSE > Class 10 > Social Science

3 answers

Neel Menghani 5 years ago (8333380)

NCERT

2 Thank You

Rajat Arora 5 years ago (10240825)

Cbse sample papers

2 Thank You

Himanshu Kumar 5 years ago (10236647)

Evergreen or xam idea

1 Thank You

ANSWER

Explain cotton textile industry???

Posted by Ishita Yadav 5 years ago (10385020)

CBSE > Class 10 > Social Science

1 answers

Secret ??? 5 years ago (10356051)

The cotton Textile Industry. ... Textile is a fabric that's knitted or woven and made from yarn. Thus, the textile industry is the industry responsible for taking a raw material, like cotton or wool, and spinning it into yarn that is later used to create a fabric

1 Thank You

ANSWER

Proof i(rms) value is i°/√2

Posted by Akansha Chaudhry 5 years ago (10200691)

CBSE > Class 12 > Physics

0 answers

ANSWER

Why metals are good conductors of heat and electricity? Please answer I am really stuck to this question ?

Posted by Aman Kumar 5 years ago (4127661)

CBSE > Class 10 > Science

5 answers

Kiran Kumari 5 years ago (10352018)

Because metal have free electron and the non metal do not have free electron.

0 Thank You

Secret ??? 5 years ago (10356051)

???

1 Thank You

Aman Kumar 5 years ago (4127661)

Thanks you all for the answers??

0 Thank You

Secret ??? 5 years ago (10356051)

Metals contain valence electrons and these electrons are free to move from one place to another. ... Thus, metals are good conductors of heat and electricity because there are free moving atoms in metals that carry both heat and electric current.

1 Thank You

Bawwa G 5 years ago (10374113)

Metal having free electron. When one end of metal wire is heated, these free electron start moving to another end of metal thus conducting heat. Same for electricity , when potential differences (PD) is applied accrues end of a metallic conductor ,they start moving from negative end to positive end of the conductor giving rise to flow of current which is from positive to negative end. Because of that metal is good conductor of heat and electricity.

1 Thank You

ANSWER

What is politics

Posted by Vishal Mehra 5 years ago (10385148)

CBSE > Class 08 > Social Science

1 answers

Divya Pawar 5 years ago (9271284)

the activities associated with the governance of a country or area, especially the debate between parties having power. Here is your answer

1 Thank You

ANSWER

What is macro?

Posted by Ishita Yadav 5 years ago (10385020)

CBSE > Class 10 > Information Technology (402)

2 answers

Secret ??? 5 years ago (10356051)

a single instruction that a computer automatically reads as a set of instructions necessary to do a particular task

2 Thank You

Secret ??? 5 years ago (10356051)

Macro means large in quantity or something big or thick

1 Thank You

ANSWER

Who are revolutionaries

Posted by Rekha Kumari 5 years ago (10380587)

CBSE > Class 10 > Social Science

2 answers

Secret ??? 5 years ago (10356051)

A revolutionary is a person who either participates in, or advocates a revolution. They wants to bring changes in society through revolutions.

0 Thank You

Shubham Chaudhary 5 years ago (8428231)

Revolutionaries are those who were opposed aristocratic order formed after treaty of Vienna (1825).

0 Thank You

ANSWER

According to the lesson, 'The Browning Version' , if a teacher is strict and does not allow his pupils freedom, he comes an object of their criticism. But later on, he is respected and remembered. Discuss.

Posted by Diksha Sharma 5 years ago (8823904)

CBSE > Class 11 > English Core

0 answers

ANSWER

A ladder of length 6 makes an angle of 45° with the floor while learning against one wall of a room. If the foot of the ladder is kept fixed on the floor and it made to lean against the wall opposite wall of the room, it makes an angle of 60° with the floor. Find thee distance between these two walls of the room.

Posted by @/<$#!T Just Own 5 years ago (9479104)

CBSE > Class 10 > Mathematics

1 answers

Secret ??? 5 years ago (10356051)

Let AB, CD be wall while A and C are the points where ladder touches the wall respectively. E is the foot of ladder. AE=CE=6( :- length of ladder and same ladder is used) ........ IN Triangle ABE and DEC, <AEB=60°and <DEC=45°............ BE/AE=cos60...... BE=1/2×6=3... ........ CE/DC=cos45...... CE=1/2½........ CE=3×2½..... BD=3+3×2½

0 Thank You

ANSWER

Given two integers x and n , compute x to the power n. Write the python code for it.

Posted by Har Har Mahadev 🙏 5 years ago (5614857)

CBSE > Class 11 > Computer Science