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Sin(B-C)÷Sin(B+C)=b×b-c×c÷a×a

Posted by Karan Kumar 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Verify by the method of contradiction that root 7 is irrational

Posted by Shivu Shahapur 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Some other questions of trigonometry intrested easy but tuff

Posted by Kshitiz Singh 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Tan18 value

Posted by David Daniel 7 years, 10 months ago

CBSE > Class 11 > Mathematics

1 answers

Harsh Singh Rajput 7 years, 10 months ago

0.324919696

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2x+3

Posted by Aman Sahu 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Chapter 1

Posted by Priyadarshan Baghel 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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What is natural no.

Posted by Sid Shoeb 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Chandrashekhar Wankhede 7 years, 10 months ago

Natural numbers are counting numbers 1,2,3,4,...

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Lata Joshi 7 years, 10 months ago

Those no which started 1

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What is mathematics..?

Posted by Manasa S 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Secx=2

Posted by Nut Monster 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Limits at infinity X2/1+X2 by l hospital rule

Posted by Sid Kumar 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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What is a mathematics

Posted by Shivam Gupta 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Find the equation of the straight line passing through the point of intersection of the lines 3x + 2y + 5 =0 and 3x + 2y + 5 =0 and perpendicular to the line 3x - 5y + 11 =0

Posted by V Maneesh 7 years, 10 months ago

CBSE > Class 11 > Mathematics

1 answers

Chandrashekhar Wankhede 7 years, 10 months ago

There will be such infinite lines because 3x + 2y + 5 =0 and 3x + 2y + 5 =0 are coinciding lines, that is they intersect in infinite points..

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Sum of the cube of n terms of natural number

Posted by Nikhil Kumar 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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V Maneesh 7 years, 10 months ago

(n (n+1)/2)^2

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Last year question papers for state level

Posted by Tazkera Samreen 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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If in two circles, arcs of the same length subtend angles 60° and 75° at the centre, find the ratio of their radii

Posted by Stanzin Namgial 7 years, 10 months ago

CBSE > Class 11 > Mathematics

2 answers

Gaurav Bansal 7 years, 10 months ago

Correct answer is 5:4

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Samriddhi Singh 7 years, 10 months ago

In this only u have to put the formula of Theta=L/R Let for 1st circle. Length be L Radius be R. Theta=60°=π/3 ....... Converted in radians. Therefore,..... Theta=L/R R=L/Theta.........(I) Therefore ... R=L/π/3....=3L/π. For 2nd circle . Length is same ...As A/c to question . Therefore Length=L Radius =R'. (Let) Theta=75°=7π/9.........(ii) Therefore, R'=L/7π/9. R'=9L/7π. ....... Now ratio...Of their radii... R/R'=3L/π÷9L/7π. R/R'=7/3. Ratio=7:3

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√2-√1+cosx/sinxsinx

Posted by Kashish Aggarwal 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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How do you find mean deviation from given mean

Posted by Shivam Mishra 7 years, 10 months ago

CBSE > Class 11 > Mathematics

2 answers

Chandrashekhar Wankhede 7 years, 10 months ago

First Find mean (average) of all observations. Then find MOD value of difference between mean and each observation. Then find mean of all MOD values of differences. This is mean deviation.

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Lata Joshi 7 years, 10 months ago

It's formula is sum of observations /no of observations

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If tanA= sinA - cosA/sinA +cosA, then show that sinA + cosA =√2cosA

Posted by Shivam Mishra 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Lim x->0. (x cosecx-cotx)

Posted by Aarchi Agrawal 7 years, 10 months ago

CBSE > Class 11 > Mathematics

2 answers

Anjali Jaiswal 7 years, 10 months ago

Sorry answer is 1

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Anjali Jaiswal 7 years, 10 months ago

Lim at x=0. x. 1/sinx -cosx/sinx Lim at x=0. 1-cosx/sinx Lim at x=02sin^2x/2/sinx. 2Lim at x=0 (sinx/2)^2/sinx/2*2 =2*2*1=4 Answer is 4

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If y = √x/a +√a/x Then prove that 2xy * dy/dx = x/a - a/x

Posted by Riyanshu Dhote 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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d/dx(sinx)

Posted by Radhika Sharma 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Radhika Sharma 7 years, 10 months ago

Cosx

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A and B are 2 complex no. Mod of B=1 find mod of the B-A/1-ĀB

Posted by Vardaan Koushal 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Define continuty

Posted by Nikhil Sahay 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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88×9

Posted by Kunjan Singh 7 years, 10 months ago

CBSE > Class 11 > Mathematics

2 answers

Deepak Tanwar 7 years, 10 months ago

792

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Anmol Saini 7 years, 10 months ago

792

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Find the derivative of f(x)=x+1\x by different I on

Posted by Chetan Verma 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Priya Kumari 7 years, 10 months ago

-1/x square

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A(5,-3),B(8,2),C(0,0) are the vertices of a triangle. Show that the median from A is perpendicular to the side BC. Please solve this question???

Posted by Himangni Sahu 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Priya Kumari 7 years, 10 months ago

You have to first calculate the mid point of BC and let name it as point D...then you have to find the slope between A and D and also between B and C...if they are nagetive reciprocal of each other then they are perpendicular to each other

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If one A.M; A and two geometric means G1 and G2 inserted between any two positive no. Show that

Posted by Ashish Yadav 7 years, 10 months ago

CBSE > Class 11 > Mathematics