CBSE > Class 10 > Mathematics | CBSE Board | Homework Help

The probability of an event will not be less than 0. This is because 0 is impossible (sure that something will not happen). The probability of an event will not be more than 1. This is because 1 is certain that something will happen.

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Anshika / U Can Call Me Alien ????? 7 years, 2 months ago

Probability ke baad kya ??

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Could anyone plz explain the answer of the 3 rd qstn in exercise 5.4

Posted by Gifty Rose Simon 7 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Gifty Rose Simon 7 years, 2 months ago

(The qstn starts so..) A ladder has rungs 25 cm apart......rungs?

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ANSWER

Hi..... Guys I'm new to this app so plz help me to understand regarding this app...........

Posted by Simran ????? 7 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Gungun_ #Guddan? 7 years, 2 months ago

Buttt plzz dont chat in this app...othrwise u will b blocked by someone

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Gungun_ #Guddan? 7 years, 2 months ago

There is nothing more tough in this app...which u cannot understand

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Gungun_ #Guddan? 7 years, 2 months ago

What do u want 2 know?

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Syllabus bta do maths ka jo 30 ko h

Posted by Tushar Aggarwal 7 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Anshika / U Can Call Me Alien ????? 7 years, 2 months ago

Are 30 ko konsa he maths ka ???time table kab change hua

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Gungun_ #Guddan? 7 years, 2 months ago

Which syllabus?

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Prove that (sinA÷secA+tanA-1)+(cosA÷cosecA+cotA-1) =1

Posted by Ritesh Patro 7 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

(sinA÷secA+tanA-1)+(cosA÷cosecA+cotA-1)

Posted by Ritesh Patro 7 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Surendrapal Singh Singh Gaur 7 years, 2 months ago

Take the first term ...and split it => SinA/secA + sinA/tanA - sinA => SinAcosA + cosA - sinA In the same way split the second term...it will result in cosAsinA + sinA - cosA Add both...=> After elimination there will be left only ( sinAcosA )^2 Change cos A as 1/sinA SinA will be cancelled out and ( 1 ) ^2= 1 Hence proved!!

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What is the sum of squares of all natural numbers upto infinity

Posted by Raj Singh 7 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Find the value of p if mean is 7. 5

Posted by Jithu Varghese 7 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Honey ??? 7 years, 2 months ago

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Anushka Jugran❣️ 7 years, 2 months ago

Complete ur question..

1Thank You

Jatt Putt Aryan???? 7 years, 2 months ago

Where is class interval and other values

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ANSWER

I need questions of trigo and a.p

Posted by Jatt Putt Aryan???? 7 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Ram Kushwah 7 years, 2 months ago

Please download from:you can log in using your gmail id

https://www.vedantu.com/cbse/important-questions-class-10-maths

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Pravin Satyavolu 7 years, 2 months ago

Try to answer this: Prove that: tanθ+secθ-1/tanθ-secθ+1=1+sinθ/cosθ.[CBSE 2002,NCERT EXEMPLAR]

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Prove that cot theta - tan theta =2cos^2 theta-1/ sin theta.cos theta

Posted by Baljit Kaur 7 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Anurag Sharma 7 years, 2 months ago

Put value of tanT and cotT in terms of sinT and CosT (T-theta)

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2√3 5

Posted by Tannu Kaushik 7 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

50 students enter for a school javelin throw competition .The distances (in metres) are recorded below. Distances: 0_20,20_40,40_60,60_80,80_100 No of students:6,11,17,12,4 Draw a less than type agive for the data

Posted by Anita Sharma 7 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

A well of diameter 7 m and 30 m deep is dug and the soil obtained by digging the well is evenly spread out to form a platform 30m*10m find the height of the platform

Posted by Radhika Rabari 7 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Siddharth Singh 7 years, 2 months ago

3.8 m

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जय बाबा मोहन राम की।। गुर्जर कबीर।। Bansal 7 years, 2 months ago

I think 16.5m

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the angle of elevation of an aeroplane from a point on the ground is 30° after a flight of 15 second the elevation changes to 45° if the aeroplane is flying at a constant height of 4500m find the speed of aeroplane

Posted by Deepasree Malathi 7 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Pl..ask me any difficult ques. Of AP?

Posted by Science Genius 7 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Science Genius 7 years, 2 months ago

In that ques. U just solve individually LHS & RHS by sum formula. U will get proved.

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Science Genius 7 years, 2 months ago

Right don't give

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Anshika / U Can Call Me Alien ????? 7 years, 2 months ago

If Sn denotes the sum of first n terms of an ap then prove that S12=3(S8-S4)

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Pl...ask me any difficult question of volume surface area ?

Posted by Science Genius 7 years, 2 months ago

CBSE > Class 10 > Mathematics

5 answers

Science Genius 7 years, 2 months ago

In 2nd ques.- r of pipe=2cm ,length of pipe=7m/sec×30min (length=distance=speed ×time) =(7×30×60×100)cm Now,volume of pipe =volume of tank, ^r2h=^r2h,(^cancel), 2×2×7×30×60×100=40×40×h, h=12600cm, h=126m, is the correct ans.

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Science Genius 7 years, 2 months ago

Ans. Of your 2nd ques. will be 31.5 m . Is it correct?

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Science Genius 7 years, 2 months ago

Its vry easy u hve to 1st find the area of 1 circle then x(into) 2 and subtract it from area of rectangle.

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Anshika / U Can Call Me Alien ????? 7 years, 2 months ago

water is flowing at 7 m/sec through a circular pipe of internal diameter 4 cm into a cylindrical tank the radius of whose base is 40 cm find the increase water level in 30 minutes ??

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Anshika / U Can Call Me Alien ????? 7 years, 2 months ago

2 circular pieces of equal radii and maximum area touching each other are cut out from a rectangular cardboard of dimension 14×??7 find the area of remaining cardboard ??

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If the numbers n-2,4n-1 and 5n+2 are in ap then find the value of n

Posted by Sehaj Sehaj 7 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Khushboo . 7 years, 2 months ago

We know that if a, b and c are in AP then a+c/2=b So, (n-2)+(5n+2)/2=4n-1 6n/2=4n-1 3n=4n-1 4n-3n=1 n=1 And the numbers are n-2=1-2=-1, 4n-1=4(1)-1=3,and 5n+2=5(1)+2=7

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The angle of elevation of top of the tower is 30°. State whether height of the tower is double the angle of elevation.

Posted by Khushboo . 7 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Surface area ablnd volume. Se questions paper me 4 marks aur 3 marks ke maximum kitne question aa sakte h

Posted by ????? ❤️ 6 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 7 months ago

You can check marking scheme here : https://mycbseguide.com/cbse-syllabus.html

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Use euclids division algorithm to find the HCF of 455and42

Posted by Mukesh Kumar 7 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Ship.. ??? 7 years, 2 months ago

455=42×10+35 42=35×1+7 35=7×5+0. Hcf=7

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Explain why 7×11*13+13 is a composite number

Posted by Anas Hammadi 7 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Ship.. ??? 7 years, 2 months ago

Taking 13 commom-remainder exits-so composite because more that two factors(more than 1 and the no.itself)

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The angle of elevation of a cloud from a point 60 metres above a lake is 30 degree and the angle of depression of the reflection of the cloud in the lake is 60 degree. Find the height of the cloud.

Posted by Bijay Sharma 7 years, 2 months ago

CBSE > Class 10 > Mathematics

5 answers

Parvathi Santhosh 7 years, 2 months ago

An important question from trigonometry part 2

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Parvathi Santhosh 7 years, 2 months ago

It is an important question

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Gaurav Seth 7 years, 2 months ago

Let AB be the surface of the lake and P be the point of observation such that AP = 60 m. Let C be the position of the cloud and C be its reflection in the lake.
Then CB =
Draw PM⊥CB
Let CM = h
∴ CB = h + 60 m

In ∆CPM

⇒ 3h = h + 120 m
⇒ 2h = 120 m
⇒ h = 60 m
CB = h + 60m = 60m + 60m = 120m
Thus, the height of the cloud from the surface of the lake is 120 m.

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Honey ??? 7 years, 2 months ago

Dist beyween lake and cloud is equals to dist. between lake and cloud shadow

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Honey ??? 7 years, 2 months ago

120 metres

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If √x+√x+√x+... ... ... ... infinity=6, then find the value of x

Posted by Ankit Kumar 7 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Ankit Kumar 7 years, 1 month ago

Answer is √x+√x+√x+√x..... infinity=6. √(x+6)=6 sq. Both side. x+6=36. x=30

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Ankit Kumar 7 years, 1 month ago

Durgesh kumar singh your answer is not correct

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Durgesh Kumar Singh 5 years, 11 months ago

✓x+✓x+...... infinity=6 n✓x=6 ✓x=6÷n x=✓6÷✓n

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Find the value of f1 and f2 ci- 10-30 ,30-50, 50-70 70-90, 90-110,110-130 and fi 5,8,f1 ,20,f2,2 respectively and total fi are 50 and mean 65.6 please give me answer with proper explanation pl

Posted by ????? ??? 7 years, 2 months ago

CBSE > Class 10 > Mathematics

4 answers

जय बाबा मोहन राम की।। गुर्जर कबीर।। Bansal 7 years, 2 months ago

f1 = 12 and f2 = 3

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Abc . 7 years, 2 months ago

xi will be —> 20,40,60,80,100,120... Fixi —> 100,320,60F1,1600,100F2,240...,, sum of Fixi will be ? 2260+60f1+100f2... Mean =65.6(given)....£Fixi/£Fi= 65.6... 2260+60F1+100F2/50=65.6... 2260+60F1+100F2=3280...10(226+6F1+10F2)=328.... 6F1+10F2=102...(i)........,, Now, 5+8+F1+20+F2+2=50.... F1+F2+35=50... F1+F2=15...(ii)...... By solving eqń (i) and (ii) you will get F1= 12 & F2=3

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Anshika / U Can Call Me Alien ????? 7 years, 2 months ago

I think it would be median not mean

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????? ??? 7 years, 2 months ago

Please

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ANSWER

Sir explain first question of class 10 maths ncert chapter 12 about archery area finding qestion

Posted by Chauhan Harsh 7 years, 2 months ago

CBSE > Class 10 > Mathematics