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

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0Thank You

Vanshika Sharma 2 years ago

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

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

Posted by Nitish Kumar Mandal 2 years ago

CBSE > Class 10 > Mathematics

1 answers

Vanshika Sharma 2 years 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

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Ex 10.2 Questions 3

Posted by Ayush Kushwah 2 years ago

CBSE > Class 10 > Mathematics

1 answers

Gurjot Kaur 1 year, 11 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.

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

Posted by Nitin Kumar 2 years ago

CBSE > Class 10 > Mathematics

2 answers

Saksham Patni 2 years 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

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Gaurav Kumar 2 years ago

R=7, πr²*10

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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 ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Kumar 2 years ago

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

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ANSWER

Define radian

Posted by Anurag Singh 2 years 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 ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

What do you mean by AP

Posted by Navneet Singh Thakur 2 years ago

CBSE > Class 10 > Mathematics

5 answers

Yogesh Kumar Saroj 1 year, 11 months ago

It means arithmetic progression

0Thank You

Vinod Vyavhare 1 year, 11 months ago

ap is arithmetic progression

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Ishika Verma 2 years ago

Arithmetic progression

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Satwik Tisaver 2 years ago

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

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Nancy Yadav 2 years ago

Arithmetic progression

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ANSWER

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

Posted by Nikita Das 2 years ago

CBSE > Class 10 > Mathematics

2 answers

Aarush Soni 2 years ago

r = 7 cm

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Gunjan Pathak 2 years ago

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

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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 ago

CBSE > Class 10 > Mathematics

1 answers

Parven Parven 2 years ago

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Explain Thales therom

Posted by Anshuman Lenka 2 years ago

CBSE > Class 10 > Mathematics

2 answers

Devapriya R 2 years 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

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Hardik Jain 2 years ago

Thales theorem also called a bpt theorem

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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 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 ago

CBSE > Class 10 > Mathematics

1 answers

Padala Rohit Kumar 2 years ago

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

Posted by Nikita Das 2 years ago

CBSE > Class 10 > Mathematics

2 answers

Hitesh Shukla 2 years ago

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

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Padala Rohit Kumar 2 years ago

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

Posted by NaͥΓaͣNͫ Tiωari 2 years ago

CBSE > Class 10 > Mathematics

1 answers

NaͥΓaͣNͫ Tiωari 2 years ago

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

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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 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 ago

CBSE > Class 10 > Mathematics

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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 ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

All formula in surface area and volume

Posted by Sharad Soni 2 years 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 ago

CBSE > Class 10 > Mathematics

1 answers

Padala Rohit Kumar 2 years ago

Angle b is the right angled

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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 ago

CBSE > Class 10 > Mathematics

1 answers

Ayush Singh 2 years ago

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

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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 ago

CBSE > Class 10 > Mathematics

1 answers

Mohd Saqlain Mohd Saqlain 2 years 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

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

Posted by Will Rob 2 years ago

CBSE > Class 10 > Mathematics

3 answers

Will Rob 1 year, 11 months ago

Answer is 20

0Thank You

Deepak Chettri 2 years 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.
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1Thank You

Syed Sakhi Hyder 2 years ago

LCM is 20

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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 ago

CBSE > Class 10 > Mathematics