CBSE > Class 11 > Mathematics | CBSE Board | Homework Help

In third quadrant cosx is negative there 2cos^2x/2=1+cosx=1-1/3=2/3=2/6=root2/6 in 3rd quadrant cosx/2=-root2/6 and sinx/2=-2/root6 and tanx/2=1/root2 final answer Sinx/2=-2/root6, cosx/2=-root (2/6), tanx/2=1/root2

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If tan x=3/4,22/7< x< 3*22/7/2 find the value of sin x/2, cos x/2 and tan x/2

Posted by Aman Verma 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

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1*2+2*3+3*4+4*5.....

Posted by Balram Yadav 4 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Sia ? 4 years, 8 months ago

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tanx+tan2x+tanxtan2x=1

Posted by Kabita Devi 8 years, 3 months ago

CBSE > Class 11 > Mathematics

2 answers

Ashutosh Bajpayee 4 years, 11 months ago

tanx+tanw+tanxtan2x=1 tanx+tan2x=1-tanxtan2x thanx+tan2x/1-tanx+tan2x=1 Tan(2x+x)=π/4 tan3x=tanπ/4 now, 3x=π/4 x=nπ/3+π/12 x=4π(n+1)/12

1Thank You

Swapnal Swami 6 years, 3 months ago

tanx+tan2x+tanxtan2x=1
tanx+tan2x = 1 - tanxtan2x
(tanx+tan2x)/(1 - tanxtan2x) = 1
tan3x = 1
3x = π/4 + nπ, n = 0, ±1, ±2, ...
x = π/12 + nπ/3
= π/12(1 + 4n)

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1+1+86

Posted by Vidyanand Matho 4 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Sia ? 4 years, 8 months ago

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If f(x)=x^2+1/x^2 then find f(x)=?

Posted by Dee Ka 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

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What will be the 51th word in ex 22 ncert

Posted by Sujal Mahajan 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

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The number of real roots of the equation (x2 +

Posted by Naman Kakkar 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

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Find no. of terms in (1+x)101(1+x2-x)100. {101,100 & 2 are powers}

Posted by Shivangi Rautela 8 years, 3 months ago

CBSE > Class 11 > Mathematics

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Find the equation of line passing through the point 1 -1 and perpendicular to the line 2 X + 4 Y = 3 and X + 3 Y = 4 A lines such that its segment between the line 5 x- y + 4 = 0

Posted by Harshit Chaudhary 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

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Definitation of sets

Posted by Stuti Jha 8 years, 3 months ago

CBSE > Class 11 > Mathematics

2 answers

Khushboo Tiwari 8 years, 3 months ago

A well defined collection of an object is known as set.

1Thank You

Ayush Meena 8 years, 3 months ago

A well defined collection of objects

2Thank You

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(k+1)(4k,

Posted by Sumeet Singh 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Answers should be given for all the subjects

Posted by Lokesh Choudhury 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Why 1+1=2?

Posted by Lokesh Choudhury 8 years, 3 months ago

CBSE > Class 11 > Mathematics

1 answers

Keshav Bindal 8 years, 3 months ago

Because of addition

2Thank You

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there are 2 birds on the tree one more bird come .what is the no of birds

Posted by Anurag Kumar 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Why a polygon can't have 16 sides?

Posted by Dipesh Mishra 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

2+2+4

Posted by Aman Raj 8 years, 3 months ago

CBSE > Class 11 > Mathematics

2 answers

Sujal Mahajan 8 years, 3 months ago

1Thank You

Abhishek Kumar 8 years, 3 months ago

0Thank You

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Find the locus of the point which is equidistant from the points A(0,2,3)and (2,-2,1)

Posted by Ayush Meena 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

A sequence b1, b2, b3 is defined by letting b1= 2 and dk=dk - 1for all natural number k greater than or equals to 2 shoe that dn = 2|n! for all natural number?

Posted by Mukul Raj 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Sir/mam is there any trick for remembering formulas of trignometery

Posted by Jay Pandya 8 years, 3 months ago

CBSE > Class 11 > Mathematics

2 answers

Ankur Raj 8 years, 3 months ago

https://youtu.be/QY1PAZh9loo Go to this link it would give you a basic trick to remember t-ratios of angles

0Thank You

Anshita Rana 8 years, 3 months ago

No just learn it by practice a lot of questions

2Thank You

ANSWER

Root of 45556

Posted by Shivam Verma 8 years, 3 months ago

CBSE > Class 11 > Mathematics

1 answers

Inha Parveen 8 years, 3 months ago

213.4385........

0Thank You

ANSWER

Prove by PMI that 5 power n+1+4into 6 power n when divided by 20 leaves the remainder 9

Posted by Aastha Gaur 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

how to solve binomial expansion

Posted by Vishesh Singh 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

2.7 and + 3.5 and minus 5 is divisible by 24

Posted by Jainendra Kumar 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

(A+B)+(a-b)

Posted by Gpl Singh 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Find the angle between the lines y-√3x-5=0 and √3y-x+6=0

Posted by Kaviya Kaviya 8 years, 3 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Sin 60°

Posted by Ravi Singh 8 years, 3 months ago

CBSE > Class 11 > Mathematics

1 answers

Preeti Mishra 8 years, 3 months ago

√3\2

4Thank You

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Sin60°

Posted by Ravi Singh 8 years, 3 months ago

CBSE > Class 11 > Mathematics

1 answers

Anamika Dubey 8 years, 3 months ago

root3 by 2

3Thank You

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What is square root of -25

Posted by Naman Bansal 8 years, 3 months ago

CBSE > Class 11 > Mathematics

1 answers

Rahul Poddar 8 years, 3 months ago

2Thank You

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