CBSE > Class 12 > Mathematics | CBSE Board | Homework Help

cot¶ √COSX - TAN ¶√cosx =y Tan [1÷ √cosx] _tan¶[ √cosx] = y Formula laga Tan¶ {1 -cosx÷2 √cosx} =y $ Tan ko sin me change kar Sin ¶ {1 -cosx / 1+cosx }= y sin ¶{ 2 sin square x /2 /2 cos square x/2 } =y sin y = { tan square x/2 } proved here ¶ = inverse show kar raha hai because mujhe tan inverse show karna nhi aa raha ok

0Thank You

Chhavi Rathi 8 years ago

Cot-¹ (√cosx) - tan-¹(√cosx) = y Tan-1(√cosx) - tan-1( √cosx) = y Tan-1(1-cosx/2)=y 2sin²x/2 / 2. = tany Sin²x/2 = tany

1Thank You

Tanya Goyal 8 years ago

Ques x m ans y m....gdbd h pkka

1Thank You

Aisha Grewal 8 years ago

Kya koi iska answer d sakta h

1Thank You

ANSWER

Find the distance of point - 2i + 3j-4k from the line vector r=i+2j-k+ Lambda (i+3j-9k) measured parallel to the plane X - 5 + 200 - 3 is equal to zero

Posted by Priyash Keshri 8 years ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Formula for distance between planes

Posted by Ayush Singh 8 years ago

CBSE > Class 12 > Mathematics

2 answers

Ayush Singh 8 years ago

Nhi diya h usme

1Thank You

Priya Prakash S 8 years ago

Refer ncert

1Thank You

ANSWER

if f(x)=ax+b,wherea and b are integers, f(-1)=-5andf(3)=3 ,then find the value of a and b.

Posted by Prabhjot Singh 8 years ago

CBSE > Class 12 > Mathematics

1 answers

Purnesh Kumrawat 8 years ago

Put values given for x ,then two linear equations will form which can be solved by elimination method?

0Thank You

ANSWER

3cos x

Posted by Shagun Sharma 8 years ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

I want to creak iit advance after drop of one year So is this will be better option that I will also do 12th twice to get more marks then 74% that i had got before

Posted by Aakash Rajput 8 years ago

CBSE > Class 12 > Mathematics

3 answers

Aditi Roy 8 years ago

I think, u not need to do 12th again for advance Just join a target batch and learn some tricks to solve problems and regular practice the numericals

1Thank You

Bhumi Choudhary 8 years ago

Akash don't waste ur costly time for doing 12th again and again.lf u get 70% then it's okkk for good collage and job okkk.plz don't waste ur time my dear.

2Thank You

Deepak Chauhan 8 years ago

If you have more than 75% then you need not to repeat board. Just focus on IIT. GOOD LUCK . Do your best

2Thank You

ANSWER

Find the integrals of function 1+cos2x --------------- .dx 1-cos2x (That border is divide ?)

Posted by Harshit Laxkar 8 years ago

CBSE > Class 12 > Mathematics

2 answers

Prerna Pahwa 8 years ago

1+ cos2x=2cos^2x ,1-cos2x=2sin^2x ,, integration. 2cos^2x/2sin^2x,,,,,integration cot^2x ,,,,,,integration Cosec^x-1,,,,,,,,,= - cotx-x+c. (,,,,,, shows next step

1Thank You

Kanak Tiwari 8 years ago

First in numerator change cos2x into 2 cos square x - 1 and then in denominator change cos2x into 1 minus sin square x then we will get tan Square x change tan Square X into sec Square x minus one and integrate it

2Thank You

ANSWER

Is it easy to pass in maths

Posted by Neeraj Mohan 8 years ago

CBSE > Class 12 > Mathematics

3 answers

Radhika Tyagi 8 years ago

Na bina smart work k possible ni h

0Thank You

Aayisha Azeez 8 years ago

Work hard and make it true.You can.?

0Thank You

Tanisha Dey 8 years ago

If u study well then it is possible

0Thank You

ANSWER

Hoe to integrate cube of tan3x

Posted by Nitin Rathore 8 years ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Value of sin [π/3 - sin-1 (-1/2) ]

Posted by Sree Ram 8 years ago

CBSE > Class 12 > Mathematics

2 answers

Kalindi Yadav 8 years ago

sin-(-1/2)=-π/6 sin[π/3-(-π/6)]=sin[π/3+π/6]=sin π/2=sin 90°= 1.

1Thank You

Prerna Pahwa 8 years ago

0Thank You

ANSWER

Find value of y a) y-1=4

Posted by Vinod Shukla 8 years ago

CBSE > Class 12 > Mathematics

2 answers

Sourin Roy 8 years ago

Bhai basic algebra nhi ata to exam kese doge?

0Thank You

Radhika Tyagi 8 years ago

1Thank You

ANSWER

A man take a step forward with probability 0.4 and backward with probability 0.5 .find the probability that at the end of 5 steps he is one step away from starting point?

Posted by Taniya Sharma 8 years ago

CBSE > Class 12 > Mathematics

1 answers

Prerna Pahwa 8 years ago

Man take three steps forward and two step backward P=5C3p^3q^2 where p:Probability step forwad=0.4 ,q=1-p. + 5C2p^2q^3 where p:Probability step backward=0.5,q=1-p. Put values and solve it

0Thank You

ANSWER

Spring

Posted by Deepak Kumar 8 years ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Solve differential equation. Y=x^2 + (sinx)^cosx

Posted by Siddharth Khandelwal 8 years ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

can y=ax+b/a be a solution of the following differential equation

Posted by Gautam Singh 8 years ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

A skew symmetric matrix of odd order is always singular .

Posted by Muskan Kumari 8 years ago

CBSE > Class 12 > Mathematics

2 answers

Prerna Pahwa 8 years ago

A'=-A |A\=(-1^n)|A\ if n is odd |A\=-|A\ 2|A\=0 |A\=0 =>A is singular

0Thank You

Birendra Pattnaik 8 years ago

Yes

2Thank You

ANSWER

How to find integral of tan3x

Posted by Nitin Rathore 8 years ago

CBSE > Class 12 > Mathematics

2 answers

Vikash Kumar 8 years ago

First let 3x as t then differentiate it w.r.to x and put the values in given equation and integrate. Final answer is ( 1/3 log l sec3x l +C )

2Thank You

Kalindi Yadav 8 years ago

For the integrand tan(3 x), substitute u = 3 x and du = 3 dx: = 1/3 integral tan(u) du The integral of tan(u) is -log(cos(u)): = -1/3 log(cos(u)) Substitute back for u = 3 x: = -1/3 log(cos(3 x))

1Thank You

ANSWER

for what maximum value of x sin^3xcos^4x attain maximum

Posted by Jayashree Sai Narayanan 8 years ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Math ke 8 number please solve the problem

Posted by Sujeet Kumar Das 8 years ago

CBSE > Class 12 > Mathematics

1 answers

Prerna Pahwa 8 years ago

What is question?

0Thank You

ANSWER

Log(sinx+cosx) from integral

Posted by Deepti Tiwari 8 years ago

CBSE > Class 12 > Mathematics

1 answers

Prerna Pahwa 8 years ago

Explain question

0Thank You

ANSWER

Blue print of question paper according to marks

Posted by Anish Thakur 8 years ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

A lighthouse is located at A 2 km off shore from the nearest point o on a straight beach and a shop is located at B of the beach at a distance of 4 km from O if the housekeeper can row with motor boat at the speed of 4 km/h and can walk at the rate of 6 km/h where should he plan to reach the shore so as to cover the distance to the shop in the least possible time ?

Posted by Riya Bansal 8 years ago

CBSE > Class 12 > Mathematics

1 answers

Kalindi Yadav 8 years ago

Draw a right angled triangle AOB, AO=2km,OB= 4 km.And OB is the sea shore and A is the lighthouse. The housekeeper starts from A, so he can take two paths From A to O, then O to B. In this path he will take 2/6 +4/4 = 1.33 hr Another path is the hypotenuse AB, the hypotenuse is always short from the sum of two sides of right triangle. Hence AB = √20 So this distance will be totally covered by motor boat Hence the time taken is 20√6hr Hence this is the minimum time taken by the house keeper to reach the shop.

0Thank You

ANSWER

Integrate x(1+x-x^2)^1/2 dx

Posted by Suraj Roy 8 years ago

CBSE > Class 12 > Mathematics

1 answers

Prerna Pahwa 8 years ago

Make derivative of 1+x-x^2 1/2 Integration (2x+1-1)√1+x-x^2 1/2 Integration (2x-1)√1+x-x^2 dx +1/2 Integration √1+x-x^2 dx Let 1+x-x^2 =t 1-2x dx=dt -1/2 Integration√tdt +1/2 Integration√-(x^2-x+1/4-1/4-1)dx -1/3t^(3/2)+ 1/2 Integration√5/4-(x-1/2)^2 dx -1/3(1+x-x^2 )^3/2 +1/2sin^-1(x-1/2)/5/4. +c

0Thank You

ANSWER

3i+5j+3k find magnitude

Posted by Muazzam Ansari 8 years ago

CBSE > Class 12 > Mathematics