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ANSWER

What is open and closed intervals? Explain ..

Posted by Abhishek Kumar Sharma 3 years, 11 months ago

CBSE > Class 11 > Mathematics

2 answers

Sia ? 3 years, 11 months ago

An open interval does not include its endpoints and is indicated with parentheses. For example, (0,1) describes an interval greater than 0 and less than 1. A closed interval includes its endpoints and is denoted with square brackets rather than parentheses.

Gokul Joshi 3 years, 10 months ago

Open interval : (2,3) ; end point not include Closed interval : [4,5] ; end point include

ANSWER

Prove that A is subset of empty set implies A= empty set .

Posted by Ƙ♬⩏Ʀ ¢Ϧ♬Ϧ♬ɭ 3 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Abhishek Kumar Sharma 3 years, 11 months ago

Because every set have a sub set called empty set which is denoted by (fie).

ANSWER

5tan2

Posted by Khadeer E 3 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

cos15 - sin 15

Posted by Monu Ray 3 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Account Deleted 3 years, 11 months ago

Write it as cos (45-30) - sin(45-30)

Now open both the functions as

= cos 45 cos 30 + sin 45 sin 30 - sin 45 cos 30 + sin 30 cos 45

Putting the values as learned in class X

${1\over \sqrt2} *{\sqrt3\over2} +{1\over \sqrt2} *{1\over2} - {1\over \sqrt2} *{\sqrt3\over2} +{1\over2} *{1\over \sqrt2}$

Solving we get

= $1\over\sqrt2$

Answer.

ANSWER

If r is symmetric relation on set A ,then write a relation between R and R complement

Posted by Taniya 3 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

If R is the set of all real numbers , what do the Cartesian product RxR and RxRxR represent ?

Posted by Pratik Sahoo 3 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Virendra Chidambar 3 years, 11 months ago

Parallel to y axis

2Thank You

ANSWER

Kon kon 11 ka new student hai

Posted by Bishwadip Raj 3 years, 11 months ago

CBSE > Class 11 > Mathematics

5 answers

Vedant Rai 3 years, 11 months ago

Abhinash Kumar 3 years, 11 months ago

I am?

Sannidhya Sahoo 3 years, 11 months ago

Mai

Khushi Jain 3 years, 11 months ago

I am also☺️☺️

Sumesh ☺️☺️☺️ 3 years, 11 months ago

Mai hu??

ANSWER

Byiknu

Posted by Varsha Sk 3 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Bishwadip Raj 3 years, 11 months ago

Bik nu

ANSWER

If a and b are natural no such that (1/a)^1/b=0•3 bar then the value of ab can be _____

Posted by Chaitanya Gupta 3 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Sachin Sarraf 3 years, 11 months ago

ANSWER

If the sum of the digits of a no (10^n-1)is 4707 where n is a natural no then the value of n is

Posted by Chaitanya Gupta 3 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Value of sin 175

Posted by Sm .. 3 years, 11 months ago

CBSE > Class 11 > Mathematics

5 answers

Sm .. 3 years, 11 months ago

Good evening .. mai thik hu tum kaise ho ? Ha abhi bas online hi chal rhi h tumhara bhi toh online hi hoga na ... class 11 ? kya hi bolun mai last ke 1 month ok pata chala k annual exams honge aur phle course complete the but fr v last 1 month bhut pdhna pda qki revise nhi ki thi aur last exam vle din bol rhe h k tum logo ka result nhi aayega? . Tumhara kaisa rha ?? Qsn drop krlena ek naya vla ok

. .. 3 years, 11 months ago

Good evening....kaise ho? Abhi to online hi class chal rahi hogi ........waise class 11 kaisa raha??????

. .. 3 years, 11 months ago

Patna me bhi bahot halat kharab hai....

Sm .. 3 years, 11 months ago

Arey yaar bhut corona h isiliye mai ghar aagyi hu..80% bhubaneswar se hi h toh socha tum logo se ek baar mil v lu

6Thank You

. .. 3 years, 11 months ago

Glad to see you back but abhi to class 12 start hui hai....khatam kaha hua?

ANSWER

cos 765°

Posted by Harshada Bangara 3 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Sia ? 3 years, 11 months ago

cos 765
= cos (765 - 360)
= cos (405)
= cos (405 - 360)
= cos (45)
= (sqrt2)/2

ANSWER

Write the range of the function f(x) = sin [x] , where -π/4 ≤ x ≤ π/4

Posted by Namrata Jindal 3 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

If A = {2,3,4}, then what is P(A)

Posted by Avni Gupta 4 years ago

CBSE > Class 11 > Mathematics

2 answers

Akhifa Sheik 4 years ago

Add null set to the top answer

Dashing Gourab 4 years ago

(2),(3),(4,),(2,3),(3,4),(2,4),(2,3,4)

ANSWER

Send me all formulæ of lesson 15.please.?‍♂️✍

Posted by Seraj ??? 4 years ago

CBSE > Class 11 > Mathematics

5 answers

Pk Singh 4 years ago

Baki sab ka kya hal hai?? Koi ata hai ki nahi.....

Pk Singh 4 years ago

Badhiya hu bhai....aree yarr pahle hamko laga ki exam nahi dena padega 11 ka ...but jab pata chala ki dena hi hai....to serious hogaya padhai me....? ...

2Thank You

Royal Thakur ? 4 years ago

Hii bro ....kaise ho ..? Itte tym se kahaan the ...?

Pk Singh 4 years ago

Hello seraj...how r u

Dark ..? 4 years ago

Hlo