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

If ur concepts are clear then definitely yes Aur question papers ki quantity matter nhi krti use apne kitni efficiently ayr time lagake solve kiya hai vo matter krta hai?? All d bst for exams..?

2Thank You

Dr.Soniya ? Kaushik 6 years, 10 months ago

Yes

2Thank You

ANSWER

find the value of a,for which point p(a/3,2)is the mid-point of the line segment joining the point Q(-5,4)and R(-1,0)

Posted by Amit Singh 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Swetanshu Kumar 6 years, 10 months ago

p(a/3,2)=1×(-1)+1×(-5)/1+1 1×0+1×4/1+1 p(a/3,2)=(-1)+(-5)/2 0+4/2 p(a/3,2)=-6/2 4/2 p(a/3,2)=(-3) 2 a/3=(-3) a=(-3)×3 a= -9

1Thank You

ANSWER

If alpha and beeta are the zeroes of polynomial f( x)= x2+px+q form a polynomial whose zeroes are ( A + B)2 and (A-B)2

Posted by Aditi Panwar 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Mukesh Kumar 6 years, 10 months ago

A+B = -p. &. AB = q (A+B)2 = p2 &. (A- B)2 = (A+B)2- 4AB. = p2-4q. So polynomial is X2-p 2x +p2-4q

2Thank You

ANSWER

Draw a right triangle in which sides other than hypotenuse are length 8cm and 6cm then construct another triangle whose sides are 3/4 times the corresponding sides of the triangle

Posted by Nancy Mandothra 6 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

Steps of construction:-

Draw a line segment BC at 8 cm.
At B draw an angle of 90°
With centre B and radius 6 cm draw an arc which intersect line of angle at A.
Join AC.
At B, draw an angle CBX of any measure.
Starting from B, cut 4 equal parts on BX such that
BX₁ = X₁X₂ = X₂X₃ = X₃X₄
Join X₄C
Through X₃, Draw X₃Q||X₄C
Through Q, Draw QP||CA
{tex}\therefore \triangle P B Q \sim \triangle A B C{/tex}

0Thank You

ANSWER

Solve for x; 1/a+b+x=1/a+1/b+1/x

Posted by Keshav Pandey 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Honey ? 6 years, 10 months ago

X=-a and-b

2Thank You

ANSWER

Theorem 10.1 class 10th mathematics explanation

Posted by Garv Patidar 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

how many marks in all chapter

Posted by Prabh Sidhu 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Sw Kkk 6 years, 10 months ago

Vo google karke dekh mil jayega teko??

1Thank You

ANSWER

If secA + tanA=p then find the value of cosec A

Posted by Sarthak Paliwal 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Puja Sahoo? 5 years, 8 months ago

cosec A= (1 +p^2)/ (1 - p^2)

6Thank You

ANSWER

Express the trigonmetric ratios sin A, Sec A, and tan A in terms of cot A

Posted by Anjali Singh 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Anjali Singh 6 years, 10 months ago

I cant understand what r u telling???

0Thank You

Abhishek Bhadauria 6 years, 10 months ago

You should convert them by using firmukae

1Thank You

ANSWER

Find the area of the largest ∆ that can be inscribed in a semicircle of radius r units

Posted by Rishabh Chaudhary 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Krishna rides a bicycle havimg a poster"SAVE ENERGY". Her bicycle makes 2500 revolution in moving 5.5km . Find diameter of wheel. What value is depicted by Krishna

Posted by Abhishek Singh??? 6 years, 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Puja Sahoo? 6 years, 10 months ago

Distance covered in 2500 revolutions = 5.5 km = 5,50,000 cm.... Distance covered in 1revolution = 5,50,000 / 2500 = 220 cm Distance covered in 1 revolution = Circumference of the wheel of the bicycle Let the radius of the wheel be 'r' cm. ⇒ 2 x 22/7 x r = 220 ⇒ r = 220 x 7/22 x 1/2 ⇒ r = 35 cm Hence, the diameter of the wheel is 70 cm.

2Thank You

Abhishek Singh??? 6 years, 10 months ago

How

1Thank You

@ Aashu 6 years, 10 months ago

0.7 m or 70 cm ..

2Thank You

ANSWER

Write the sum of first n even numbers..?

Posted by Kabir Gurjar (Up-17) 6 years, 10 months ago

CBSE > Class 10 > Mathematics

4 answers

Chetna ? 6 years, 10 months ago

कबीर जी सैड सैड थे आज कुछ आप ?

2Thank You

Chetna ? 6 years, 10 months ago

राम राम जी

1Thank You

@ Aashu 6 years, 10 months ago

Hii kabir jii

2Thank You

@ Aashu 6 years, 10 months ago

n( n+1 ).....

2Thank You

ANSWER

Find the sum of 8 multiples of 3

Posted by Anurag Khatri 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Azem Iqbal 6 years, 10 months ago

The AP will form 3,6,9,12,15,18,21,24 A=3 d=6-3=3 an=24 S8=n÷2(a + an ) =8÷2(3+24) =4(27) =108

0Thank You

ANSWER

If xsinA+ycosA=z,then show that xcosA-ycosA=+-√x²+y²-z².

Posted by Atharva Dixit 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If xsin³A + ycos³A=sinAcosA and sinA=cosA,show that x²+y²=1

Posted by Atharva Dixit 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Exams ki tayari kaisi hai friends

Posted by Sãñjü Dïdêl 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

@ Aashu 6 years, 10 months ago

Mst aur aapke

2Thank You

Shruti Choudhary 6 years, 10 months ago

Tension bhi h tyari bhi h

2Thank You

ANSWER

Find the area of a sector of a circle with radius 6 CM if angel of the sector is 60 digri

Posted by Shivam Patidar 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Priyanka S 6 years, 10 months ago

Use theta/360×πr^2 . U will get answer as 28.28cm

0Thank You

ANSWER

An ap first term is 7and its 7term is 19 find its 18 term

Posted by Vivek Soni 6 years, 10 months ago

CBSE > Class 10 > Mathematics

4 answers

Affu 😊 6 years, 10 months ago

41 is the answer

1Thank You

Shourya Adhikari 6 years, 10 months ago

58 is the answer

3Thank You

Puja Sahoo? 6 years, 10 months ago

6Thank You

Honey ? 6 years, 10 months ago

a+6d=19 isme a=7 put karo aur d find kar lo , jab a aur d pata chal jaye toh 18th trm find kar lo.

5Thank You

ANSWER

Show that one and only one out of n, n plus2, n plus 4 is divisible by 3

Posted by Guriya Singh 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 6 years, 10 months ago

let n be any positive integer and b=3
n =3q+r
where q is the quotient and r is the remainder
0_ <r<3
so the remainders may be 0,1 and 2
so n may be in the form of 3q, 3q=1,3q+2

CASE-1

IF N=3q
n+4=3q+4
n+2=3q+2
here n is only divisible by 3

CASE 2
if n = 3q+1
n+4=3q+5
n+2=3q=3
here only n+2 is divisible by 3

CASE 3
IF n=3q+2
n+2=3q+4
n+4=3q+2+4
=3q+6
here only n+4 is divisible by 3

1Thank You

ANSWER

Two tangent TP and TQ are drawn. to a circle with centre O from an external point T .prove that angle PTQ=2angleOPQ

Posted by Anup Raj 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 6 years, 10 months ago

We know that, the lengths of tangents drawn from an external point to a circle are equal.
∴ TP = TQ
In ΔTPQ,
TP = TQ
⇒ ∠TQP = ∠TPQ ...(1) (In a triangle, equal sides have equal angles opposite to them)
∠TQP + ∠TPQ + ∠PTQ = 180º (Angle sum property)
∴ 2 ∠TPQ + ∠PTQ = 180º (Using(1))
⇒ ∠PTQ = 180º – 2 ∠TPQ ...(1)
We know that, a tangent to a circle is perpendicular to the radius through the point of contact.
OP ⊥ PT,
∴ ∠OPT = 90º
⇒ ∠OPQ + ∠TPQ = 90º
⇒ ∠OPQ = 90º – ∠TPQ
⇒ 2∠OPQ = 2(90º – ∠TPQ) = 180º – 2 ∠TPQ ...(2)
From (1) and (2), we get
∠PTQ = 2∠OPQ

3Thank You

ANSWER

A rectangular solid metallic cuboid 18cm into 15cm into 4.5cm is melted and recast into solid cubes each of side 3cm. How many solid cubes can be made

Posted by Vishal Vishu K. Mathur 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 6 years, 10 months ago

Given:
Length (l)= 18 cm
Breadth (b)= 15 cm
Height (h)= 4.5 cm

Volume of metallic cuboid = l× b×h

= 18 X 15 X 4.5

=1215 cm³

Let the total no. of small cubes be x.

volume of a cube = side ³ = a³

= 3³ = 27cm³

volume of a cube= 27 cm³

No.of cubes = volume of cuboid/ volume of cube

= 1215/27 = 45

Hence, 45 cubes can be made from the given metallic cuboid.

0Thank You

ANSWER

The tangents at any point of a circle is perpendicular to radius through the point of contact

Posted by Varsha Rani?? 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 6 years, 10 months ago

The tangents at any point of a circle is perpendicular to radius through the point of contact

1Thank You

ANSWER

construct a triangle abc ab = 5 cm angle b = 60 degree and altitude cd =3cm then construct another triangle whose sides are 4/ 5 times the corresponding sides of triangle abc

Posted by Khushi Rustogi 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 6 years, 10 months ago

Draw a line segment AB of length 5cm.
Taking B as point Construct an angle of measure 60^o using a compass.
Name the angle as angle ABX.
Draw a line EF at a height of 3 cm such that it is parallel to the line segment AB. It must intersect ray BX at point C. Now join AC.
Draw CD perpendicular to AB. CD is altitude of triangle ABC having height 3cm.

1Thank You

ANSWER

In a circle of radius 21cm, an arc subtends an angle of 60 deegre at the Centre. Find the length of the arc

Posted by Vishal Vishu K. Mathur 6 years, 10 months ago

CBSE > Class 10 > Mathematics