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Watch Rajan sir YouTube channel for class 11 maths and science. Watch old videos on channel because new videos are paid and old videos are free of cost

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Prove tha root 2 is irrestional

Posted by Shariq Pasha 1 year, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Sahana Parashetti 1 year, 2 months ago

Let assume √2 is rational then √2 = p/q next square on both side after squaring root and square get cancel remaining is 2 then rhs side p2/q2 then take q2 lhs side it becomes 2q2 then p2 remains in rhs side then take 2 to rhs side it becomes p2/2 then next write 2 divides p2 and p also next take q2=p2/2 as equation 1 let p =2c then it becomes q2=(2c)2/2 then q2 =4c2/2then q2=2c2 then take 2 lhs side it becomes q2/2= c2 then write 2 divides q2and q also next step p and q has 2 as Common factor this contradiction as arise because of our assumption is wrong that root 2 is a rational number therefore root 2 is an irrational number

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If sin theta - cos theta =0.so, sin4 theta - cos4 theta =

Posted by Account Deleted 1 year, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Youvansh Sharma 1 year, 2 months ago

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Purvi Singh 1 year, 2 months ago

Sin⁴-cos⁴ =(Sin²)²+(Cos²)² =(Sin²+cos²)(sin²-cos²) =1(sin-cos)(sin+cos) =1*0*(sin+cos) =0

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In triangle abc right angled at b b if tan a is equal to 1 upon root 3 find the value of sin a cos c + cos a sin a and cos a cos c -sin a sin c

Posted by Yash Dalla 1 year, 2 months ago

CBSE > Class 10 > Mathematics

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4x+3y=7 by elimination methd

Posted by Haleema Haleema 1 year, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Haleema Haleema 1 year, 2 months ago

4x+3y=7 by substitution method

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Haleema Haleema 1 year, 2 months ago

6x+5y=11 by cross multiplication

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If cot theta +cos theta =x,cot theta -cos theta=y. Find x²-y²

Posted by Aditi Sharma 1 year, 2 months ago

CBSE > Class 10 > Mathematics

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P(x)=√3x2+10x+7√3

Posted by Adarsh Srivastav 1 year, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Ayush Pradhan 1 year, 2 months ago

✓2

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Neha Yadav 1 year, 2 months ago

Bhai karna kya hai isme Ye to quadratic eq. Bhi nhi

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from my external point p two tangents pa and pb are drawn to a circle with the centre o at a point e on the circle a tangent is drawn to intersect pa and PB at CD respectively if pa is equal to 10 cm find the perimeter of triangle PCD

Posted by Hanna Ram K 1 year, 2 months ago

CBSE > Class 10 > Mathematics

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Card mark with the number 5,6,7, 74 a place to the back and mix throughly one credit drone with the random from the back find the problem between the number on the card is perfect cube

Posted by Gihfzfufkt Hlfhfg Z 1 year, 2 months ago

CBSE > Class 10 > Mathematics

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3-9

Posted by Yash Gupta 1 year, 2 months ago

CBSE > Class 10 > Mathematics

5 answers

Varun Pandey 1 year, 2 months ago

-6

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Jaya Prajapat 1 year, 2 months ago

-6

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Swaraj Kiravekar 1 year, 2 months ago

-6

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I Am Bad I Am Bad 1 year, 2 months ago

-6

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Devansh Rai 1 year, 2 months ago

-6

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The perimeter of a triangle with vertices (0'4)'(0'0) and (3'0) is

Posted by Vinay Pal Vinaypal 1 year, 2 months ago

CBSE > Class 10 > Mathematics

4 answers

M Charith 1 year, 1 month ago

12 units

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Sudhir Kumar 1 year, 2 months ago

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Neha Yadav 1 year, 2 months ago

12 units

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Prince Sharma 1 year, 2 months ago

12cm²

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1. Find the 17th term from the end of the AP: 1, 6, 11, 16 … … 211, 216

Posted by Deepak Nishad 1 year, 2 months ago

CBSE > Class 10 > Mathematics

5 answers

Neha Yadav 1 year, 2 months ago

136

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Neha Yadav 1 year, 2 months ago

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Arjun Sarnaik 1 year, 2 months ago

-79

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I Am Bad I Am Bad 1 year, 2 months ago

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Sumit Rajput 1 year, 2 months ago

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The angle of elevation of the top of a tower from a point on the ground which is 30m away from the foot of the tower is 30°find the height of the tower

Posted by Tryambak Upadhyay 1 year, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Neha Yadav 1 year, 2 months ago

10 root 3

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find the relationship between x and y such that the point (x,y) is equidistant from the points (7,1) and (3,5)

Posted by Jilukara Shynika 1 year, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Varun Pandey 1 year, 2 months ago

Answer is -x+y = 2

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Difference between similar and congrunts

Posted by Akshat Vishnoi 1 year, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Ameeshi Soni 1 year, 2 months ago

Similar - Same shape Congruent - Same shape , Same size

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Sumit Rajput 1 year, 2 months ago

Similar shape same but in congruent shape and size both are equal

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1.1-2.1

Posted by Narjis Khatoon 1 year, 2 months ago

CBSE > Class 10 > Mathematics

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Ameeshi Soni 1 year, 2 months ago

-1.0

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Varun Pandey 1 year, 2 months ago

Answer is -1.0

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I Am Bad I Am Bad 1 year, 2 months ago

-1.0

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Aksharasuresh Suresh Kumar 1 year, 2 months ago

113

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A scale model of the water tower of 100 cm height is created. The height of its pillars is 75 cm each. What is the height of a pillar in metres in the actual water tower? D) 53.4 m B )25 m C) 30m. A) 7.5 m

Posted by Ayyan Pranathi Rameswarapu 1 year, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Shivansh Priyadarshi 1 year, 1 month ago

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One such circular park radius. Circular park of radius are needed has two segments with flowers one segment with substance and angle 90 degrees at the centre is full of Red roses while the other segment with Central angle 60 degree is full of red coloured roses it is given this combined area of the two segments is 256 2/3 square metre find the value of r find the area of segment Red roses and yellow roses

Posted by Saikapil Kumar 1 year, 2 months ago

CBSE > Class 10 > Mathematics

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Prove that root5 is a irrational

Posted by Riya R 1 year, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Naman Kumar 1 year, 2 months ago

=Let √5 is an rational no. =√5=p/q (where p and q are co-prime no. =√5q=p =on S. B. S. =5q^2=p^2 =q^2=p^2/5 (5 is a factor of p^2. 5 is also a factor of q^2.) =put p=5c =q^2=25c^2/5 =q^2=5c^2 =q^2/5=c^2 (5 is a factor of q^2. 5 is also a factor of q.) =we get 5 is a common factor of p and q. =but p and q are co-prime no. =This is a contradiction. =Our assumption was wrong. = so, √5 is a irrational no. Hence, PROVED

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Which term of the AP :3,8,13,18..........is 78

Posted by Preeti Baweja 1 year, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

M Charith 1 year, 1 month ago

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Vaishnavi Patil 1 year, 2 months ago

an=a+(n-1)d 78=3+(n-1)5 78-3=(n-1)5 75/5=(n-1) 15=(n-1) n=15+1=16.

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Tanmay Thakur 1 year, 2 months ago

16th term.

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Posted by Himanshu Rajput 1 year, 2 months ago

CBSE > Class 10 > Mathematics

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Himanshu Rajput 1 year, 2 months ago

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The nth term of an AP cannot be n^2 + 1.Justify your answers

Posted by Yashi Rai 1 year, 2 months ago

CBSE > Class 10 > Mathematics

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Yashi Rai 1 year, 2 months ago

Summary of Madam rides the bus

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Underoot5+2underoot53=?

Posted by Kritika Kritika 1 year, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Kritika Kritika 1 year, 2 months ago

Underoot265

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Given a3=15,S10=125 find d and a10

Posted by Mifrah Ali 1 year, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Nitika Mehera 1 year, 2 months ago

a3= 15 I.e. a+2d=15 -----eq.1 S10=125 i.e. 125=10/2 [2a+(10-1)d] 125=5[2a+(9)d] 125/5=2a+9d 2a+9d=25-------eq.2 Multiply eq.1 by 2 2(a+2d=15) 2a+4d=30------eq.3 By elimination method On subtracting eq 2 from eq.3 2a+4d=30 - 2a+9d=25 -: -5d=5 d=-1 Put d=-1 in eq.1 a+2×-1=15 a-2=15 a=15+2 a=17 Now, a10=a+9d =17+9×-1 =17-9 a10=8

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The road find the root of equation X square + X - p (p + 1) close equal to zero

Posted by Sameer Malik 1 year, 2 months ago

CBSE > Class 10 > Mathematics