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Prove that cot2 pi/6+ cosec5pi/6+3tan2pi/6=6

Posted by K K 6 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Gaurav Seth 6 years, 6 months ago

Question:

Prove that:

cot² pi/6 + cosec 5pi/6 + 3tan² pi/6 = 6

Solution:

L.H.S.

= R.H.S.

1Thank You

ANSWER

Cos9°+sin9°÷cos9°-sin9°=tan54°

Posted by Umesh Gupta 6 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Que- let f={(1,1),(2,3),(0,-1),(-1,-3)} be a linear function from Z to Z.Find f(x).

Posted by Parth Singla 6 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

f = {(1, 1), (2, 3), (0, -1), (-1, -3)}
{tex} \Rightarrow {/tex} f (1) = 1, f (2) = 3, f(0) = -1, f(-1) = -3

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ANSWER

a2b7 in (a_2b)12 find coefficients

Posted by Krishna Yadav 6 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

if 2 5p3=np4 find the value of n

Posted by Kalpna Gaur 4 years, 5 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

(x²-2x)(2x-2)-9(2x-2/x²-2x)<0 Solve the inequality

Posted by Deepanshi Yadav 6 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

What is onto function

Posted by Sarika Popli 6 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

In mathematics, a function f from a set X to a set Y is surjective, or a surjection, if for every element y in the codomain Y of f there is at least one element x in the domain X of f such that f(x) = y.

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If the sum of n terms of an A.p is 3n²+5n. And it's m t h term is164.find the value of m

Posted by George P.V 6 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Gaurav Seth 6 years, 6 months ago

Sn=3n²+5n

S₁=a₁=3(1)²+5(1)=8

S₂=3(2)²+5(2)=22

S₂=22=a₁+a₂

a₂=22-8=14

d=a₂-a₁=14-8=6

n^th term value is 164,then what is n?

n^thterm=a+(n-1)d

164=8+(n-1)6

164-8 / 6=n-1

156/6=n-1

26+1=n

n=27

So 27^thterm is 164.

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ANSWER

Why -1is not a prime no which has two factor 1or-1

Posted by Kajal Chauhan 6 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Soorma Bhopali ?? 6 years, 6 months ago

-1 is not a factor only 1 is a factor...

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ANSWER

What is an induction ?

Posted by Mahenbakumar Haorongbam 6 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

Mathematical induction is a mathematical proof technique. It is essentially used to prove that a property P holds for every natural number n, i.e. for n = 0, 1, 2, 3, and so on.

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a+b/c=cos (A-B)/2/sinC/2

Posted by Jas Malhi 6 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Cos 5x = 16 Cos raise to 5 x -20 Cos raise to 3 x + 5 cos x

Posted by Manjummm Vinod 6 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

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Write empty set in set builder form

Posted by Heem Khodaniya 6 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

{}

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ANSWER

Chapter 4 example no. 1 and 3

Posted by Tyagi Piyush 6 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Find the equation of the ellipse with major axis along the x-axis and passing through the points (4,3) and (-1,4).

Posted by Khushi Sharma 6 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

{3,4}€A

Posted by Afzal Hasan 6 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Why omega+omega square=1 ????

Posted by Soorma Bhopali ?? 6 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Show that A union B=A intersection B impliesA=B

Posted by Chitranshu Kumar 6 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Gaurav Seth 6 years, 6 months ago

Let A = B

AUB = A

A intersection B = A implies A U B = A intersection B

A = B implies AU B = intersection B ---- (1)

Now let A U B = A intersection B. Then we have to prove that A = B. For this let x belongs to A implies x belongs to A U B

= x belongs to A intersection B

= x belongs to A and x Belongs to B

= x belongs to B

so A subset of B --- (2)

Now we will let y belong to B which implies y belongs to A U B

= y belongs to A intersection B
= y belongs to A and y belongs to B
= y belongs to A

Therefore, B subset of A --- (3)

from (2) and (3) we get A=B

so A union B will be equal to A intersection B implies A = B ---(4)

From (1) and (4) we will get

A union B = A INTERSECTION B Implies A = B

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What is a set builder form of relation

Posted by Afsa Anjum 6 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Neha Tiwari 6 years, 6 months ago

It is the 1st form of sets in this the statement is called set builder form for example :- x:x is an odd no. where x is a natural no. 0<x<20 .

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What is mode, median

Posted by Ayush Kumar 6 years, 6 months ago

CBSE > Class 11 > Mathematics

2 answers

Ar Gu 6 years, 6 months ago

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Sia ? 6 years, 6 months ago

The "median" is the "middle" value in the list of numbers. To find the median, your numbers have to be listed in numerical order from smallest to largest, so you may have to rewrite your list before you can find the median.
The "mode" is the value that occurs most often.

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Prove that 1/sin(x-a)sin(x-b)=cot(x-a) -cot(x-b) /sin(a-b)

Posted by Viraj Barnwal 6 years, 6 months ago

CBSE > Class 11 > Mathematics