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

Ask questions which are clear, concise and easy to understand.

Ask Question

Prove that the diameter AB of a cirlce bisects all thise chords which are parallel to the tangents at the point A.

Posted by Sourish D Great 6 years, 6 months ago

1 answers

Sia ? 6 years, 6 months ago

Given: A circle with centre O and AOB is diameter.
CAD is a tangent at A. Chord EF || tangent CAD

To prove: AB bisects any chord EF || CAD.
Proof: OA radius is perpendicular to tangent CAD.
{tex}\therefore{/tex} {tex}\angle{/tex}1 = 90°
CAD || EF [Given]
{tex}\therefore{/tex} {tex}\angle{/tex}1 = {tex}\angle{/tex}2 = 90° [alternate interior angles]
Point M is on diameter which passes through centre O.
{tex}\because{/tex} Perpendicular drawn from centre to chord bisect the chord.
Hence, AB bisect any chord EF || CAD.

0Thank You

ANSWER

If k is a non zero constant then the polynomial whose zero are -1 and-2 is

Posted by Dhvani Parmar 7 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Is NCERT is sufficient to score 95% in board exam or there is a need of reference book

Posted by Aryan Raj 7 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Ansh Vats 7 years, 8 months ago

No need because the whole paper comes from NCERT only we should read each and every part of NCERT books even example to score 98%

1Thank You

Tarun Kumar 7 years, 8 months ago

Our first priority should me NCERT book but for proper practice of physics numericals and maths sum we need a refrence book .

1Thank You

ANSWER

Hie guys plzz help me Mujhe smjh nhi aa rha mai 11th m konsa subject choose kru mujhe bio m interest h but ghr wle maths lene bol rhe h??

Posted by Janvi Dahre 7 years, 8 months ago

CBSE > Class 10 > Mathematics

10 answers

Janvi Dahre 7 years, 8 months ago

Ok Anya???

0Thank You

Anya Sharma 7 years, 8 months ago

I am also interested in bio and my aim is doctor u choose ur 11 subject according to ur aim it's help in future and u interested in bio then u give best scoring in boards 12 and keeps promise to ur parents for best scoring

1Thank You

Naman Mittal 7 years, 8 months ago

Choice bio

1Thank You

Jay Vaghasiya 7 years, 8 months ago

Jo baka takalif to revani ho

2Thank You

Janvi Dahre 7 years, 8 months ago

Ok guys

2Thank You

Sourish D Great 7 years, 8 months ago

Choose comas its easy

2Thank You

Priya Tomar 7 years, 8 months ago

Choose bio because you are interested in bio....

3Thank You

Pawan Kumar 7 years, 8 months ago

First what do you want to be?

2Thank You

Meraj Ahmed 7 years, 8 months ago

It's depend on ur interest no one can force u

2Thank You

Janvi Dahre 7 years, 8 months ago

Answer do koi

1Thank You

ANSWER

When will be result for class 10

Posted by Rakshitha Rakshitha 7 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Jay Vaghasiya 7 years, 8 months ago

No it wiil not be in mid of may Tt wiil be on end of may

1Thank You

Pawan Kumar 7 years, 8 months ago

Mid of may

1Thank You

ANSWER

Sum of the n term of the series under root 2,root8. Root 18. Root 32 , , , , , , , is

Posted by Atif Khan 6 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

{tex}\frac{{n(n + 1)}}{{\sqrt 2 }}{/tex}

0Thank You

ANSWER

If x ( underline on above o x) is the mean of x1. X2. X3,,,,,,,,,,, xn then mean (x1+k), (x2+k) (x3+k) ,,,,,::::,,,, (xn+k)

Posted by Atif Khan 7 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If the point (2,3) (4,k) (6,-3) are collinear then find the value of k

Posted by Atif Khan 6 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 5 months ago

Let the points A (2, 3), B{tex}\left( {4,k} \right){/tex} and C{tex}\left( {6, - 3} \right){/tex} be collinear.
If the points are collinear then area of triangle ABC formed by these three points is 0.
{tex}\therefore {/tex}{tex}{\text{ar}}\left( {\Delta {\text{ABC}}} \right) = \frac{1}{2}\left[ {{x_1}\left( {{y_2} - {y_3}} \right) + {x_2}\left( {{y_3} - {y_1}} \right) + {x_3}\left( {{y_1} - {y_2}} \right)} \right]{/tex}= 0
{tex} \Rightarrow {/tex}{tex}\frac{1}{2}\left[ {2\left( {k + 3} \right) + 4\left( { - 3 - 3} \right) + 6\left( {3 - k} \right)} \right] = 0{/tex}
{tex} \Rightarrow {/tex}{tex}\left[ {2k + 6 - 24 + 18 - 6k} \right] = 0{/tex}
{tex} \Rightarrow {/tex}{tex}\left[ { - 4k} \right] = 0{/tex}
{tex} \Rightarrow {/tex}{tex}k = 0{/tex}

0Thank You

ANSWER

Find the radio of circle when the area of a circle is 256

Posted by Simhachalam Gunna 7 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Jay Vaghasiya 7 years, 8 months ago

Circle no radio kem kadhvo

1Thank You

Harsh Nainwal Harsh 7 years, 8 months ago

I think yur question is wrong

3Thank You

ANSWER

Is pie a rational?

Posted by Mohit Mahajan 7 years, 8 months ago

CBSE > Class 10 > Mathematics

4 answers

Ileesha Mittal 7 years, 8 months ago

No pie is not rational but its values are rational like 3.14,22/7 because they are not in their complete form so pie is irrational

3Thank You

Shivani K 7 years, 8 months ago

Ya ri8 pie is not rational....

4Thank You

Kesharwani Aditya 7 years, 8 months ago

2Thank You

Vishal Sharma 7 years, 8 months ago

No pie is irrational

2Thank You

ANSWER

If angle A and angle B are acute angle such that cosA =cosB , then show that ang. A =ang. B

Posted by Vaishnavi Srivastava 7 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Prem Choudhary 7 years, 8 months ago

<hr />

Draw a triangle ABC in which BC should be Base and triangle is at right angle at ang.C

Now in triangle ABC

Cos A= side adjacent A/Hypotenuse

= AC/AB

Similarly,

COS B = side adjacent B/Hypotenuse

= BC/AB

Given that

COS A= COS B

AC/AB=BC/AB

AC=BC

IN A TRIANGLE OPPOSITE SIDES ARE EQUAL

ANG B= ANG A

PROVED..

6Thank You

ANSWER

Exercise 3.2 Q 6

Posted by Himani Lamba 7 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Ileesha Mittal 7 years, 8 months ago

Of which book

3Thank You

ANSWER

2x sqaure minus 50

Posted by Donika Angel 7 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Jashan Judge 7 years, 8 months ago

2(x^2 - 25)

1Thank You

ANSWER

Prove that the product of two consecutive posetive integers is divisible by two

Posted by Sanabil Arshad 7 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Ileesha Mittal 7 years, 8 months ago

Let two consecutive + ve integer r n and n+1 n*n+1=n2+ n Let n=2q so (2q)2 + 2q Then we take common from it 2 then we have 2(2q2+q) Divide by 2 then we have 2q2+q Remainder is 0 so it is completely divisible Hence prooved...

1Thank You

Ileesha Mittal 7 years, 8 months ago

Take a example 2*1=2and then divive by 2 so 2/2=1 So it is completely devisible

1Thank You

ANSWER

On dividing a positive integer n by 9 we get 7 as remainder what will be remainder if 3n-1 is divided by 9

Posted by Harsh Srivastava 7 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Saurabh Singh 7 years, 8 months ago

0Thank You

ANSWER

Prove root 6 is irrational

Posted by Saurabh Singh 7 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Saurabh Singh 7 years, 8 months ago

Ya but it is process for such type of guestion but I want whole solution

2Thank You

Abhilasha Rajput 7 years, 8 months ago

By assuming root 6 as a rational number

2Thank You

ANSWER

give an example to show that the product of rational number and an irrational number may be a rational number

Posted by Rajbir Singh 7 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Abhilasha Rajput 7 years, 8 months ago

3√5+7

3Thank You

ANSWER

In Ch-2 polynomials in ex 2.2 in Q.2 How we can write alpha and beta's product and sum without knowing the quadratic equation's coefficient of xsquare and x and constant term?

Posted by Aditya Singh 7 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Vishesh Kathuria 7 years, 8 months ago

Ex 1/4 ,-1 sum of zeroes= 1/4 ,product of zeroes=-1,p(x)=K(x²-(sum of zeroes)x + (product of zeroes),p(x)=K(x²-¼x+-1),p(x)=(4x²-1x-4)

4Thank You

ANSWER

Rout in 2,1apond 3 write the method of sum of zero and product of zero

Posted by Azim Akhtar 7 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Yashdeep Yadav 7 years, 8 months ago

Alpha+beta and product of zero =alpha*beta

4Thank You

ANSWER

A circular field of circumference of 360km, three cyclist start together and can cycle 60km, 72km and 90km a day, around the field. After how many days will they meet again at the starting point.

Posted by Gaurav Jagota 7 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Vedic maths

Posted by Kushagra Sharma 7 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Which help book is best for maths??

Posted by Divya Yadav 7 years, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

Naman Mittal 7 years, 8 months ago

Motivasional math

1Thank You

Yashdeep Yadav 7 years, 8 months ago

R.D Sharma

2Thank You

Sourabh Suman 7 years, 8 months ago

R.D.sharma

2Thank You

ANSWER

prove that √10 is irrational

Posted by Mihir Rao 7 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If 2 and 3 are zeroes of polynomial 3x square -2kx+2m then fund the value of k and m

Posted by Amisha ....... 7 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Divya Yadav 7 years, 8 months ago

Sorry i haven't read the ques carefully.

0Thank You

Divya Yadav 7 years, 8 months ago

Since 2 and 3 are 0s of polynomial then (x-2) and (x-3) are factors. Then, (x-2)×(x-3) is also a factor. X^2-5x+6 is also a factor. Now divide the given polynomial px by the new factor. U'll get some quotient. Now do middle term split of the quotient and u will get other 0s

0Thank You

ANSWER

Find the quadratic polynomial where sum and product of the zeros one and 1/a

Posted by Suba Sri 7 years, 8 months ago

CBSE > Class 10 > Mathematics