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

So, A mod 7 = 3, and B mod 7 = 5 use mod property, (A + B ) mod 7 = (5 + 3) mod 7 = 1 (A-B) mod 7 = (3 - 5) mod 7 = (-2) mod 7 = (7–2) mod 7 = 5 -2 and 5 belong to same residue class. The equivalence class of the integer a, is the set {… , a − 2n, a − n, a, a + n, a + 2n, …}. This set, consisting of the integers congruent to a modulo n, is called the congruence class or residue class or simply residue of the integer a, modulo n. When the modulus n is known from the context, that residue may also be denoted [a].

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What i do to practice regularly

Posted by Priyanshu Sharma 6 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Sexy Girl ? 6 years, 2 months ago

???

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Bhavya Saini 6 years, 2 months ago

Read a topic twice or thrice it will surely help you ???

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From which book I should prepare

Posted by Mohit Dhull 6 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Deeksha Singh 6 years, 2 months ago

Only NCERT Publications

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Divyansh Kumar 6 years, 2 months ago

ncert publications

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Solve the following equation. X+1\X=3

Posted by Rahul Soni 6 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

??Anshu....? S 6 years, 2 months ago

1/2

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Krishna Sengar 6 years, 2 months ago

X+1/x=3 3x=x+1 3x-x=1 2x=1 X=1/2...ans

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Which sample paper is best ?

Posted by ??Cute?? Niharoo?? 6 years, 2 months ago

CBSE > Class 10 > Mathematics

4 answers

??Cute?? Niharoo?? 6 years, 2 months ago

Okkkk vse oswal or arihant dono hi ache h

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Rani Mishra ??? 6 years, 2 months ago

Arihant

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Shreya .... 6 years, 2 months ago

Oswaal* and sahitya bhawan also..

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Shreya .... 6 years, 2 months ago

Yes...I also prefer ideal and arihant..

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The radius of circle 7/√x cm. Then area of circle is

Posted by Ashish Rathee 6 years, 2 months ago

CBSE > Class 10 > Mathematics

4 answers

Sexy Girl ? 6 years, 2 months ago

154 by x

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Gourisankaran M. P 6 years, 2 months ago

154/x is the answer

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??Cute?? Niharoo?? 6 years, 2 months ago

154/x cm .sq

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??Cute?? Niharoo?? 6 years, 2 months ago

π49/x cm.sq

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Height and distance

Posted by Varshagowda Varshagowda 6 years, 2 months ago

CBSE > Class 10 > Mathematics

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If tan A + cot A = 4, then tan⁴A + cot⁴A =

Posted by Manoranjan A 6 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Bhavya Saini 6 years, 2 months ago

Given Equation is tanA + cotA = 4. On squaring both sides, we get = > (tanA + cotA)^2 = (4)^2 = > tan^2A + cot^2A + 2tanAcotA = 16 = > tan^2A + cot^2A + 2 * tanA * (1/tanA) = 16 = > tan^2A + cot^2A + 2 = 16 = > tan^2A + cot^2A = 16 - 2 = > tan^2A + cot^2A = 14. On squaring both sides, we get = > (tan^2A + cot^2A)^2 = (14)^2 = > tan^4A + cot^4A + 2 * tan^4A * cot^4a = 196 = > tan^4A + cot^4A + 2 * tan^4A * (1/tan^4A) = 196 = > tan^4A + cot^4A + 2 = 196 = > tan^4A + cot^4A = 196 - 2 = > tan^4A + cot^4A = 194. Hope this helps

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Madhu Sharma 6 years, 2 months ago

Just square both the side twice

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Madhu Sharma 6 years, 2 months ago

Answer is 574

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T tanA+cotA=3 to prove 1-tan^2A

Posted by Sataveek Das 6 years, 2 months ago

CBSE > Class 10 > Mathematics