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

There are 4 ace in pack of 52 cards so for getting 2 ace at a time divide 4 by 2 so the no of favourable outcome will be 2 divide it by 52 and you get your ans as 2/52=1/26

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Nakul Sakhalikar 6 years, 1 month ago

6/52=3/26

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ANSWER

Which term of the AP:121,117,113,........,is its first negative term?(Hint:Find n for an<0)

Posted by Tushar Kumar 6 years, 1 month ago

CBSE > Class 10 > Mathematics

4 answers

Sarthak Jain 6 years, 1 month ago

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Harsh Gaikwad 6 years, 1 month ago

a=121 d= -4 Tn=a+(n-1)d<0 =121+(n-1)-4<0 =121+4-4n<0 =125-4n<0 =4n>125 =n>125/4 =n>31.25 So; 32th term will be its first negative term.

2Thank You

Satyam Kumar 6 years, 1 month ago

A=121 and d=-4 An= a+(n-1)d =121+(n-1)4 Since a n is negative show value of a n is less then rero

2Thank You

Tushar Kumar 6 years, 1 month ago

2Thank You

ANSWER

Hlo friends aapke pas board exams ka blue prints hai kya

Posted by Afeefa Ara 6 years, 1 month ago

CBSE > Class 10 > Mathematics

3 answers

Vanshika . 6 years, 1 month ago

U can get it on utube

3Thank You

Sahil Singh 6 years, 1 month ago

.............

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Miss. 1234 6 years, 1 month ago

sorry friend .. but i don't have ?

2Thank You

ANSWER

(cosec A - sin A)(Sec A - cos A)

Posted by Ankit Malik 6 years, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

Madhu Tiwari 6 years, 1 month ago

Sin *cos

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Chitresh Khandal 6 years, 1 month ago

sin×cos ?

1Thank You

ANSWER

sinA=3/4 then find the value of cosecA.

Posted by Jatin Tyagi 6 years, 1 month ago

CBSE > Class 10 > Mathematics

6 answers

Sarthak Jain 6 years, 1 month ago

4/3

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Harsh Gaikwad 6 years, 1 month ago

4/3?????

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Tushar Kumar 6 years, 1 month ago

Cosec =H/P,=4/3

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Ankit Malik 6 years, 1 month ago

SinA=p/h p=3 and h=4 therefore cosecA = h/p =4/3

1Thank You

Aadya Singh 6 years, 1 month ago

Cosec A = 4/3

1Thank You

Hardik Sharma 6 years, 1 month ago

Hello

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ANSWER

Standard or basic maths

Posted by S Boyz 6 years, 1 month ago

CBSE > Class 10 > Mathematics

7 answers

Simerjeet Kaur 6 years, 1 month ago

Standard

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Harsh Gaikwad 6 years, 1 month ago

Advanced

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Krishna Chouhan 6 years, 1 month ago

Standard What's your?? ?

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Ankit Kumar 6 years, 1 month ago

Standard

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Asc Chauhan 6 years, 1 month ago

What,s your,s????

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S Boyz 6 years, 1 month ago

Ooh

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Asc Chauhan 6 years, 1 month ago

Basic maths

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ANSWER

A boy standing on a horizontal plane finds a bird flying at a distanace of 100m from him at an elevation of 30degree. A girl standing on the roof of 20m high building, finds the angle of elevation of the same bird to be 45degree. If the boy and the girl are on opposite sides of the bird, find the distance of the bird from the girl.

Posted by V J K V 6 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Anubhav Raj 6 years, 1 month ago

30 meter

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ANSWER

If 3cotA =2, then the value of tanA

Posted by Mohd Neflan 6 years, 1 month ago

CBSE > Class 10 > Mathematics

7 answers

Ankit Malik 6 years, 1 month ago

3/2

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?? 6 years, 1 month ago

Hii shruti sis

3Thank You

?? 6 years, 1 month ago

I am sorry maine dhayan nhi diya mijhe lga cos A hai

1Thank You

Mahua Saha 6 years, 1 month ago

3/2

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Aadya Singh 6 years, 1 month ago

Tan A = 3/2

2Thank You

?? 6 years, 1 month ago

Sorry √5/2

1Thank You

?? 6 years, 1 month ago

3/√5

2Thank You

ANSWER

How to get prepared for trigonometry????? I am too weak in that ???

Posted by Class 12 6 years, 1 month ago

CBSE > Class 10 > Mathematics

14 answers

Madhu Tiwari 6 years, 1 month ago

Learn formula firstly and then do question of ncert

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Broken Soul 6 years, 1 month ago

Agr yaha to mere online aane pr milna sb aache se kra dunga ... aapka chapter ho jayega easy hai???

1Thank You

Broken Soul 6 years, 1 month ago

Agr messenger to jb chaho message kr dena

1Thank You

Broken Soul 6 years, 1 month ago

Thankx ki zarurat nhi hai sis?

1Thank You

Broken Soul 6 years, 1 month ago

Batao kese pdna chahogi messenger ya yaha?

1Thank You

Class 12 6 years, 1 month ago

Thankuuuùu☺️

1Thank You

Broken Soul 6 years, 1 month ago

I can help you ... mesaage me on messenger my id is - aproov kaur. And there is no friend on fb. Agr yaha pe hi to jb mai online hou tb ana . ?mai sikha dunga dont worry sis?

2Thank You

Vanshika . 6 years, 1 month ago

1st try to understand WHAT types of questions r asked form precious years papers d practice those types of questions more with full concentration

0Thank You

Ankush Thepe 6 years, 1 month ago

Practice

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S Boyz 6 years, 1 month ago

Acha opinion ni hai

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Anubhav Raj 6 years, 1 month ago

Dear sir to sirf tricks bateyge but beta mehanat to thumehi karna hi ???????

1Thank You

Pushkar Sahi 6 years, 1 month ago

Practice more and more...

1Thank You

?? 6 years, 1 month ago

Aap bs ek baar dear sir ka video dekh lo mujhe visvas hai ki aapko acche se smj aa jayegi

1Thank You

?? 6 years, 1 month ago

Watch video of dear sir on you tube

1Thank You

ANSWER

Kon kon KENDRIYA VIDYALAYA me padhra hai ? Comment in which Kendriya vidyalaya do you study?

Posted by Saloni Singh 6 years, 1 month ago

CBSE > Class 10 > Mathematics

5 answers

Madhu Tiwari 6 years, 1 month ago

What a question

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Sowndaryaa Lakshmi V 6 years, 1 month ago

Vaha bhi hai kya kv

1Thank You

Ankush Thepe 6 years, 1 month ago

Kv 1

1Thank You

Broken Soul 6 years, 1 month ago

Nope buddy..

1Thank You

?? 6 years, 1 month ago

Nhi pde h????

2Thank You

ANSWER

Solve for x : x²+x+1

Posted by Broken Soul 6 years, 1 month ago

CBSE > Class 10 > Mathematics

40 answers

Aadya Singh 6 years, 1 month ago

Mera name aadya bhi h muskan ?

2Thank You

?? 6 years, 1 month ago

Aadya kon hai ???

2Thank You

Aadya Singh 6 years, 1 month ago

Miss S ???

1Thank You

?? 6 years, 1 month ago

Now i understand

1Thank You

Miss. 1234 6 years, 1 month ago

??? Aadya...

1Thank You

Aadya Singh 6 years, 1 month ago

Bye..

1Thank You

Aadya Singh 6 years, 1 month ago

And sorry...roots honge but real nhi honge ?????

1Thank You

Aadya Singh 6 years, 1 month ago

Mere se 10th nhi padha ja rha..aap log 11th ki book padh rhe ho ???????

1Thank You

Aadya Singh 6 years, 1 month ago

Pta nhi kha h..????????

1Thank You

Miss. 1234 6 years, 1 month ago

D<0...therefore roots of this equation are not real...and abhi iske roots nikalna 10th me nahi aaya...11th me hai iska chapter ???

1Thank You

Aadya Singh 6 years, 1 month ago

11th ka karoge to marks cut ho jayenge ????mai nhi likhungi chahe jha bhi ho...10th ki book me nhi h to nhi h bss ????10th me saaf saaf likha h D negative hoga to no real roots honge..ab dekhti hu kaun mere marks cut karega ???????

1Thank You

Broken Soul 6 years, 1 month ago

Mai ni dekh sakta patani kaha hai book??????

1Thank You

Aadya Singh 6 years, 1 month ago

Page no. 91 pe ekdam niche wali line dekhna thoda ????

1Thank You

Broken Soul 6 years, 1 month ago

Arre 11 ki maths ncert mai hai????????????????

1Thank You

Broken Soul 6 years, 1 month ago

Aur batao kya chalra hai??

1Thank You

Broken Soul 6 years, 1 month ago

Chalo leave it??

1Thank You

Aadya Singh 6 years, 1 month ago

Kaun se page no. h...btana thoda ???

1Thank You

Broken Soul 6 years, 1 month ago

Ncert mai hai ki root -1 i hota hai likha hai.????????

1Thank You

Broken Soul 6 years, 1 month ago

Root to hota hai but root ki value - mqi hoti hai jo hum solve ni kr sakte???

1Thank You

Aadya Singh 6 years, 1 month ago

Nhi..book me nhi diya to aisa question exam me dega to mai nhi no roots hi likhungi ???

1Thank You

Broken Soul 6 years, 1 month ago

Arre aadu niche wala msg dekh leti to itna bada msg ni bhejna pdta??????

1Thank You

Broken Soul 6 years, 1 month ago

. . .

1Thank You

Aadya Singh 6 years, 1 month ago

D = b² - 4ac = 1- 4×1×1 = -3 ..ab dekho discriminant ki value negative me h..and ye to padha hi hoga jbb discriminant ki value negative hoti h to koi root nhi hota h..

1Thank You

Broken Soul 6 years, 1 month ago

Complex number hota hai i wala???

1Thank You

Broken Soul 6 years, 1 month ago

Aadu √-1 ko i se repeesent krte hai???

1Thank You

Broken Soul 6 years, 1 month ago

D = b²-4ac = 1² - 4 × 1 = -3

x=-b±√d/2a
x = -1±√3i/2

2Thank You

?? 6 years, 1 month ago

Ooooo

2Thank You

Aadya Singh 6 years, 1 month ago

"i" Mtlb ?..but iska root nhi hoga to nhi hoga..maine bol diya bas ?????

1Thank You

Broken Soul 6 years, 1 month ago

Muskan discriminant wala formula use kiya hai...

1Thank You

?? 6 years, 1 month ago

Please give full solution

2Thank You

Broken Soul 6 years, 1 month ago

Nhi aadu dhyan se dekho ans mai √3i(root3 i) hai?????

1Thank You

Aadya Singh 6 years, 1 month ago

And ur answer is also wrong ????

1Thank You

?? 6 years, 1 month ago

/2 kaise

1Thank You

Aadya Singh 6 years, 1 month ago

Nhi hoga..bcoz discriminant ki value negative me aa rhi h..?ur answer is wrong ???

1Thank You

Broken Soul 6 years, 1 month ago

Sachin's ans is wrong

1Thank You

Broken Soul 6 years, 1 month ago

Ans is : x= (-1±√3i)/ 2

1Thank You

Broken Soul 6 years, 1 month ago

Roots to hai aadu???

1Thank You

Sachin Pancholi 6 years, 1 month ago

X2+x+x+1 X(x+1)+1(x+1) Zeros are= (x+1)(x+1) X+1=0 X=-1

0Thank You

Aadya Singh 6 years, 1 month ago

It has no roots...?

1Thank You

Broken Soul 6 years, 1 month ago

Koi hai?

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ANSWER

How to score in good marks in maths

Posted by Shikha Gupta 6 years, 1 month ago

CBSE > Class 10 > Mathematics

5 answers

Madhu Tiwari 6 years, 1 month ago

By doing previous question of 1947to 2020

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Niteshvashu Goswamig 6 years, 1 month ago

By Practice ,solve last year question paper

0Thank You

Jayveer Yadav 6 years, 1 month ago

Chaterwise last 10 year paper

0Thank You

Sowndaryaa Lakshmi V 6 years, 1 month ago

Do previous year question paper. Study all important theorem. Do many many sample question papers. Super 20 question bank is a good one. Do try some application level questions. Practice mcq Carefully with time limit. All this hepls you score high. All the best dear for your exams???

4Thank You

Broken Soul 6 years, 1 month ago

Be perfect at ncert and exempler.. , solve sample papers and previous year papers .. this will help u . If u wish to score 75+, practice reference books too

2Thank You

ANSWER

An integer is chosen at random between 1 and100. Find the probability that it is : divisible by 8 and not divisible by 8

Posted by Mohd Javed 6 years, 1 month ago

CBSE > Class 10 > Mathematics

3 answers

Madhu Tiwari 6 years, 1 month ago

1/2

0Thank You

Poonam Kumar 6 years, 1 month ago

Betweem 1 to 100 there are 98 numbers (except 1 and 100) So, Divisible by 8= 12/98=6/49 Not by 8= 86/98=43/49

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Pavi K. 6 years, 1 month ago

Itna aasaan hai

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ANSWER

As observed from the top of a 75 metre Lighthouse from the sea level the angle of depression of two ships are 30 and 45 ones exactly behind the other on the same side of Lighthouse find the difference between them

Posted by Sujal Sahu 6 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Sahana Lotus 6 years, 1 month ago

First draw a perpendicular line, and from the top, draw line of slight to the bottom.Mark the angle near tower as 45 and the next as 30. Find the length of the base of the first triangle with angle 45, using tan 45. Take the full length from the foot of the tower till the last ship[ where 30 ends] as X. Now take the length from the first ship to the second ship as X - 75 [ u will get the first ans as 75] . Then solve using tan 30. You will get the answer. Hope it was useful. All the best for your exams...do well.....

1Thank You

ANSWER

Prove graphically that cos²ф + sin²ф = 1

Posted by Broken Soul 6 years, 1 month ago

CBSE > Class 10 > Mathematics

3 answers

Madhu Tiwari 6 years, 1 month ago

Why on graph .?prove it neumerically

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Broken Soul 6 years, 1 month ago

Innocent bird

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Broken Soul 6 years, 1 month ago

Hey innocent girl ... ye mai hu pehchana ?

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ANSWER

The perimeter of a semi circle is 36 CM then find the radius.

Posted by Vaishnavi Verma 6 years, 1 month ago

CBSE > Class 10 > Mathematics

7 answers

Madhu Tiwari 6 years, 1 month ago

R=126/11

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Broken Soul 6 years, 1 month ago

Hlo innocent girl ... pehchana?

0Thank You

?Innocent Bird? 6 years, 1 month ago

Hey mate ☺ HERE'S THE ANSWER!!! If perimeter of semi circle = 36 Perimeter of semi circle = pi×r = 36 = 22/7×r = 36 = 22r/7 = 36 = r = 36×7/22 =r = 126/11 = r = 11.454 (approx)

1Thank You

Broken Soul 6 years, 1 month ago

7 cm

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Broken Soul 6 years, 1 month ago

7 c.

0Thank You

Shivam Aryan 6 years, 1 month ago

Answer is 7cm

0Thank You

Shivam Aryan 6 years, 1 month ago

42/11