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Cos[2tan inverse (1/7)]=

Posted by Anil Gurjar 7 years, 11 months ago

CBSE > Class 12 > Mathematics

2 answers

Sahil Satyam 7 years, 11 months ago

=cos{ cos inverse{[1-(1/49)]/[1+(1/49)] } =(48/49)/(50/49) =48/50 =24/25

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Usha Bisht 7 years, 11 months ago

First break 2 tan inverse formula in term of cos . i.e. Cos inverse (1-x ka square /1+x ka square) then u will get your answer

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(a+b)2 a plus b ka whole square

Posted by Rajpriya Kumari 7 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Usha Bisht 7 years, 11 months ago

a ka square + b ka square + 2ab

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Integration of one by underroot one plus sin2x

Posted by Probodh Mandal 7 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

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e×(sin4x-4/1-cos4x).dx

Posted by Niemesh Langar 7 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

For what values of k,the system of linear equation x+y+z=2 2x+y-z=3 3x+2y+kz=4 has a unique solution?

Posted by Surya Pratap Tomar 7 years, 11 months ago

CBSE > Class 12 > Mathematics

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Integeration of sinx

Posted by Prince Gupta 7 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Surya Pratap Tomar 7 years, 11 months ago

-cosx

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Integrate dx/sin^4x+cos^4

Posted by Keshav Kishore 7 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

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How to find equivalence class

Posted by Sandeep Joshi 7 years, 11 months ago

CBSE > Class 12 > Mathematics

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If f(x+y)=f(x).f(y) and f'(0)=2 them prove that f'(x)=2f(x).

Posted by Vivek Kumar 7 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

If a line x-1/2=y-1/3=z-1/4 and x-3/1=y-k/2=z/1 intersect than find the value of k hence find the eqution of plane containing these line

Posted by Prashant Yadav 7 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Tan0

Posted by Muskan Soni 7 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Muskan Kalra 7 years, 11 months ago

tan0= 0

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Exercise 9.6 question no. 5

Posted by Akhtar Khan 7 years, 11 months ago

CBSE > Class 12 > Mathematics

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is sin π = 0?

Posted by Sushmit Wilkhoo 7 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Abc Ch 7 years, 11 months ago

Yes

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What are mutually exclusive and mutually exhaustive events

Posted by Sahil Jaat 7 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

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How to revise the mathematics syllabus for preboard 2

Posted by Rashmi Kumari 7 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Squeaky Pathak 7 years, 11 months ago

You can solve more and more sample paper and n.c.e r.t question and you can achieve good marks

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Y=tan^-1(x+√(1+x^2))

Posted by Aniket Chatterjee 7 years, 11 months ago

CBSE > Class 12 > Mathematics

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Integration of cosx

Posted by Harshit Chhabra 7 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Himanshu Chauhan 7 years, 11 months ago

∫cosx.dx = sinx

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Minimum of z occurs at more then two

Posted by Bhawna Malodiya 7 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Solve linear programming problem

Posted by Bhawna Malodiya 7 years, 11 months ago

CBSE > Class 12 > Mathematics

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ANSWER

A bag contains 4 green and 6 white balls. Two balls are drawn one by one without replacement. If the second ball drawn is white, what is the probability that the first ball drawn is also white?

Posted by Hemang Popli 7 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Usha Bisht 7 years, 11 months ago

I think 5/9

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Sininverse day over dx =x+y solve de

Posted by Shahid Ansari 7 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

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Differentiate the following with respect to x: F(x) = tan ^-1 [(1-x)÷(1+x)] - tan^-1 [(x+2) ÷ (1-2x)]

Posted by Sanjana Cristy 7 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

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Surface area of cone

Posted by Anushka Panday 7 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Vaibhav Mahajan 7 years, 11 months ago

T.S.A=πrl+πr² C.S.A=πrl Volume=⅓πr²h

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Difference between with replacement and without replacement in probablility

Posted by Priya Saklani 7 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Vaibhav Mahajan 7 years, 11 months ago

With replacement means that sample space remains the same after occurrence of some event for ex,if a bag contains 2red and 5blue balls then the probability of getting red ball is 2/7 and after this you'll put the ball back and as such in sample space 7 balls remains there.But in without replacement the sample space gets affected by events.

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Integration sin x + cos x bute me a 1 - sin 2x DX

Posted by Deepu Sharma 7 years, 11 months ago

CBSE > Class 12 > Mathematics