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

total no of cards =52 total no of black queen=2 therefore probability of a getting a black queen = total no of possible outcomes/total no of outcomes =2/52 or 1/26 [ANSWER]

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Aadya Singh ? 6 years ago

1/26.

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ANSWER

Cos^4A - Cos^2 = sin^4 - sin^2A

Posted by Piyush Mishra 6 years ago

CBSE > Class 10 > Mathematics

2 answers

Piyush Mishra 6 years ago

Thanks brother

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Deep Singh 6 years ago

Cos ^4 A - cos ^2 A = (cos^2 A)^2 - cos^2 A = cos^2 A (cos ^2 A - 1) = - cos^2 A(1-cos^2A) =- cos^2 A * sin^2 A =- (1- sin^2 A)*sin^2 A = (sin^2 A - 1)*sin^2 A = sin^4 A - sin^2 A Hence, proved

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ANSWER

In polynomial exercise 2.2 how 3x2-x_4=12x2

Posted by Keerthana Devarakonda 6 years ago

CBSE > Class 10 > Mathematics

3 answers

Deep Singh 6 years ago

The zeroes are 4/3 and -1. The relation between zeroes and coefficient are α+β=4/3+(-1)=-1/3=-(coefficient of x) /(coefficient of x^2) αβ=4/3*(-1)=-4/3=(constant term)/(coefficient of x^2).

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Deep Singh 6 years ago

The zeroes are 4/3 and -1. Relation between zeroes and coefficient are α+β=4/3+(-1)=-(coefficient of x) / (coefficient of x^2) αβ=4/3*(-1)=(constant term) /coefficient of x^2)

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Deep Singh 6 years ago

Puchna kya chahte ho bhai aap???

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ANSWER

Ho to draw instructions

Posted by Mohd. Kazim 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Miss. 1234 6 years ago

instructions nhii constructions hota h??

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ANSWER

BPT. Theorem

Posted by Shreya Tiwari 6 years ago

CBSE > Class 10 > Mathematics

3 answers

Nitin Bhardwaj 6 years ago

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

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☺ ............. 6 years ago

Basic Proportionality Theorem was first stated by Thales, a Greek mathematician. ... Basic Proportionality Theorem (can be abbreviated as BPT) states that, if a line is parallel to a side of a triangle which intersects the other sides into two distinct points, then the line divides those sides in proportion.

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Ankesh ..?? Ready To My First Fly? 6 years ago

If a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct point s,the other two sides are divided in the same ratio.

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ANSWER

If a and b are the zeroes of polynomial x^2-5x+m such that a-b=1, find m.

Posted by Neetu Singh 6 years ago

CBSE > Class 10 > Mathematics

3 answers

Prithvi Raj Singh 6 years ago

The value of m=6

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Arun Kirar 6 years ago

The value of. m is equal to 6

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Aadya Singh ? 6 years ago

The value of m is 6.

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ANSWER

Kisi ne maths or sci ka new pattern of question paper dekha h plz batoo n

Posted by Ankesh ..?? Ready To My First Fly? 6 years ago

CBSE > Class 10 > Mathematics

3 answers

Aadya Singh ? 6 years ago

Check the sample papers....

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Ankesh ..?? Ready To My First Fly? 6 years ago

Plz tell me about this sis

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Aaliya ? 6 years ago

Hmm dekha hai..

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ANSWER

Google me alg sample papr h maths ka or cbse guide app me alg hai kon sa sahi h plz tell me or google sample papr k solution kha mileng maths ke plzzzzzz tell me

Posted by Shubham Rawat 6 years ago

CBSE > Class 10 > Mathematics

7 answers

Shubham Rawat 6 years ago

Ap loose word kyu use kre ho Aadya singh

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Aadya Singh ? 6 years ago

Ya to phir google wala official website ni hoga...to galat hoga....bcz maine jo google pe dekha tha...vahi yha pe bhi h...basic ka mujhe ni pta....but standard wala vahi h...

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Aadya Singh ? 6 years ago

Kaun da dekh rhe h...2 sample paper h - Standard and basic.

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Shubham Rawat 6 years ago

Nhi h same

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Aadya Singh ? 6 years ago

Nahi...sample paper to same h....?

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Shubham Rawat 6 years ago

What cbse

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Aaliya ? 6 years ago

Cbse ka...

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ANSWER

Prove that the perpendicular at the point of contact to the tangentto a circle passes through the centre

Posted by Anup Bamal 6 years ago

CBSE > Class 10 > Mathematics

2 answers

R. Chinmayee 6 years ago

Sry ya wrong answer

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R. Chinmayee 6 years ago

Given:-ABCD is a quadrilateral circumscribing a circle with centre O. To prove:-angle AOD+angle BOC=180&angle AOB+angle BOD=180. Construction:-Join OP,OQ,OR&OS. Proof

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ANSWER

Exercise 13.2 7

Posted by Basil Biju 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Sonu Army 6 years ago

2and 4

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ANSWER

(cosQ-sinQ)/(cosQ+sinQ)=(1-√3)/(1+√3)

Posted by Mohd. Shahid 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Deep Singh 6 years ago

Pura question kya hai? Kuch prove krna hai ya Kuch find krna hai?

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ANSWER

Show that (CosQ-sinQ)/ (cosQ+sinQ)=(1-√3)/(1+√3).

Posted by Mohd. Shahid 6 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The surface area of sphere and cube are equal then find the ratio of their volumes?

Posted by Afsar Sohail 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Deep Singh 6 years ago

Surface area of sphere = 4πr^2 Surface area of cube =4a^2 Atq, 4πr^2=4a^2 =>πr^2=a^2 =>a=r√π Volume of sphere /volume of cube =4/3πr^3/a^3 =4/3πr^3/r^3π√π =4/3√π =4:3√π

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ANSWER

Find the mean of first five prime numbers?

Posted by Rahul Sheokand 6 years ago

CBSE > Class 10 > Mathematics

5 answers

Deep Singh 6 years ago

5.6

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Sahil ??? 6 years ago

5.6

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Yogita Ingle 6 years ago

First five prime numbers are 2, 3, 5, 7 and 11.

The mean or the average formula is = Sum/no. = (2 + 3 + 5 + 7 +11)/5 = 5.6.

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Arpit Maurya 6 years ago

Sorry 2

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Arpit Maurya 6 years ago

2.5

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ANSWER

Find the roots of the quadric equation /2×"+7+/2=0

Posted by Harshit Harshit 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Deep Singh 6 years ago

Question kya h bhai aapka??

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ANSWER

in a right triangle pqr where is the hyper tennis of length 20 cm and angle b is equal to 60 degree the area of the triangle is

Posted by Sangeeta Singh 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Arpit Maurya 6 years ago

20√3

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ANSWER

If the sum of the third and the eighth term of an AP is 7 and the sum of the seventh and fourteenth term is -3 find the tenth term

Posted by Meera Savatha 6 years ago

CBSE > Class 10 > Mathematics

2 answers

Deep Singh 6 years ago

a+2d+a+7d=7 =>2a+9d=7--------[1] a+6d+a+13d= -3 =>2a+19d= -3 ---------[2] On subtracting 1 and 2, -10d =10 ,therefore d=-1 Now putting the value of d in eq. 1,we get, a=8. Therefore,10th term= a+9d = 8+9(-1) =-1 Since, 10th term = -1.

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Sushant Singh 6 years ago

a10= -1.

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ANSWER

A window of a house is 'h'metre above the ground from the window the angle of the elevation and depression of the top and the bottom of another house situated on the opposite side are found to be alpha and beeta respectively.Proof that the height of the other house is h(1+tan alpha × cot beeta)

Posted by Meera Savatha 6 years ago

CBSE > Class 10 > Mathematics