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

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

0Thank You

Vanshika Sharma 2 years, 3 months ago

10=TEN 8=EIGHT 9=NINE TOOK FIRST LETTER OF ALL WORDS NOW, T+E+N = TEN =10

2Thank You

ANSWER

1/a+b+x = 1/a + 1/b + 1/x =0

Posted by Nitish Kumar Mandal 2 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Vanshika Sharma 2 years, 3 months ago

1/a+b+x=1/a+1/b+1/x=0 Sol :- 1/a+b+x - 1/x = 1/a+1/b x-(a+b+x)/ (a+b+x) x = a+b/ab x-a-b-x / x^2+ax+bx = a+b/ab -(a+b) / x^2 + ax + bx = a+b/ab x^2 + ax+ bx = -ab x^2 +ax+bx+ab=0 x(x+a) +b(x+a) =0 (x+a) (x+b) =0 x+a=0 x=-a x+b=0 x=-b

1Thank You

ANSWER

Ex 10.2 Questions 3

Posted by Ayush Kushwah 2 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Gurjot Kaur 2 years, 3 months ago

The radius drawn to the tangents will be perpendicular to the tangents. Thus, OA ⊥ PA and OB ⊥ PB ∠OBP = 90º ∠OAP = 90º In AOBP, Sum of all interior angles = 360° ∠OAP + ∠APB +∠PBO + ∠BOA = 360° 90° + 80° +90º +∠BOA = 360° ∠BOA = 100° In ΔOPB and ΔOPA, AP = BP (Tangents from a point) OA = OB (Radii of the circle) OP = OP (Common side) Therefore, ΔOPB ≅ ΔOPA (SSS congruence criterion) And thus, ∠POB = ∠POA Hence, 50° is the correct answer.

1Thank You

ANSWER

The area of swept by 7 cmlong minute hand of a clock in 10 minute is

Posted by Nitin Kumar 2 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Saksham Patni 2 years, 3 months ago

R= 7cm In 1 minute it swept 6degree so in 10 minutes it will swept 6×10=60 degree Now by sector formula Theta/360×πr² 60/360 ×22/7×49 77/3cm² area swept by minute hand

1Thank You

Gaurav Kumar 2 years, 3 months ago

R=7, πr²*10

1Thank You

ANSWER

A circus stands is cylindrical up to a height of 4 m and conical above it if the diameter of the base is 90 cm and slant height of the conical part is 33 CM then find the total Canvas used in making the tent

Posted by Deepak Bhandari 2 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Kumar 2 years, 3 months ago

Canvas use in rectangular tent, R=45cm H=400cm

0Thank You

ANSWER

Define radian

Posted by Anurag Singh 2 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If cosec A + cot A = p , then prove that cos A = (p² - 1)/(p²+1) .

Posted by Aarush Soni 2 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

What do you mean by AP

Posted by Navneet Singh Thakur 2 years, 3 months ago

CBSE > Class 10 > Mathematics

5 answers

Yogesh Kumar Saroj 2 years, 3 months ago

It means arithmetic progression

0Thank You

Vinod Vyavhare 2 years, 3 months ago

ap is arithmetic progression

0Thank You

Ishika Verma 2 years, 3 months ago

Arithmetic progression

0Thank You

Satwik Tisaver 2 years, 3 months ago

In the no.of term the common difference is called AP

0Thank You

Nancy Yadav 2 years, 3 months ago

Arithmetic progression

0Thank You

ANSWER

The area of the circle is 154 cm². The radius of the circle is what?

Posted by Nikita Das 2 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Aarush Soni 2 years, 3 months ago

r = 7 cm

0Thank You

Gunjan Pathak 2 years, 3 months ago

Area of the circle = 154cm² πr² = 154 22/7×r² = 154 r²=154×7/22 r²= 49 r=√49 r= 7cm

2Thank You

ANSWER

3. If the sum of first n terms of an AP is given by S,, = 3n + 2n, find the nth term of the AP.

Posted by Krishna Soni 2 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Parven Parven 2 years, 3 months ago

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

0Thank You

ANSWER

Explain Thales therom

Posted by Anshuman Lenka 2 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Devapriya R 2 years, 3 months ago

If a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct points then the other sides are divided in the same ratio

0Thank You

Hardik Jain 2 years, 3 months ago

Thales theorem also called a bpt theorem

0Thank You

ANSWER

If the Radius of wire is 0.2 m, resistivity of wire is 1.2 into 10^-18 ohm m, length of the wire is 5.2 metre, volt of battery is 12 volt, find the amount of current flow through wire and also find resistance of the wire.

Posted by Kashish Baliyan 2 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

A train travels at a certain average speed for a distance of 63 km and then Travels at a distance of 72 km at an average speed of 6 km

Posted by Chandini Raman 2 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Padala Rohit Kumar 2 years, 3 months ago

1Thank You

ANSWER

Value of k for which the quadratic equation 2x²-kx+k=0 has equal roots is what ?

Posted by Nikita Das 2 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Hitesh Shukla 2 years, 3 months ago

K²-8K=0 ( b²-4ac=0 for equal roots) K(K-8)=0 K=0 or K=8

1Thank You

Padala Rohit Kumar 2 years, 3 months ago

1Thank You

ANSWER

In the figure given below CD||BA Find angle ACB .

Posted by NaͥΓaͣNͫ Tiωari 2 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

NaͥΓaͣNͫ Tiωari 2 years, 3 months ago

In the figure given below CD||BA Find angle ACB .

3Thank You

ANSWER

radius of a circle is 15 cm. if the length of a chord of the circle is 20 cm, then find the distance of the chord form the centre

Posted by NaͥΓaͣNͫ Tiωari 2 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

if alpha +beta are the zeros of the quadratic polynomial F(x)=X square - 2x - 8 then find the value of the alpha - beta

Posted by Rohit Aggarwal 2 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

alpha + beta are the zeros of the quadratic polynomial FX is equals to x square - 2x - 8 then find the value of alpha - beta

Posted by Rohit Aggarwal 2 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

All formula in surface area and volume

Posted by Sharad Soni 2 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

In a right triangle ∆ABC in which <B=90 ,a circle is drawn with AB as diameter intersecting the hypotenuse AC at P. Prove that the tangent to the circle at P bisects BC

Posted by Sharad Soni 2 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Padala Rohit Kumar 2 years, 3 months ago

Angle b is the right angled

0Thank You

ANSWER

If alpha and beta are the zeroes of the polynomial 2x^2-13x+6 then alpha + beta is equal to

Posted by Rohan Teng 2 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Ayush Singh 2 years, 3 months ago

alpha+beta= -b/a=13/2

0Thank You

ANSWER

Two tangent TP antique are drawn to a circle with centre of from external point t prove that angle p t q is equal to 2 angle of OPQ

Posted by Mohd Saqlain Mohd Saqlain 2 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Mohd Saqlain Mohd Saqlain 2 years, 3 months ago

Let angle opq is equal to X angle q p t is equal to 90 - X TP is equal to tq angle t p q is equal to tqp and 90 - X = tqp in triangle TP by angle sum property 99x + 90 - X angle p t q is equal to 180 - 2 X + angle p t q is equal to zero is equal to 2x angle p t q is equal to 2 or PQ

1Thank You

ANSWER

The LCM of smallest two-digit composite number and smallest composite number is :

Posted by Will Rob 2 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Will Rob 2 years, 2 months ago

Answer is 20

0Thank You

Deepak Chettri 2 years, 3 months ago

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

1Thank You

Syed Sakhi Hyder 2 years, 3 months ago

LCM is 20

2Thank You

ANSWER

If a and b ars two co-prime numbers, then a cube and b cube are: a) co-prime b) not co-prime c) even d) odd

Posted by Will Rob 2 years, 3 months ago

CBSE > Class 10 > Mathematics