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

tan-¹(1) + cos-¹(-1/2) + sin-¹(-1/2) tan-¹= pie/4 cos-¹= 2pie/3 sin-¹= -pie/6 on adding them all.. pie/4+2pie/3+-pie/6= 9pie/12 =3pie/4 ... ans. *tan-¹(1) tan-¹(1)=y tan y=1 we know that range of tan-1= [-pie/2 , pie/2] so tan y=1=tan pie/4 y=pie/4 similarly repeat for othets also.. wishing you alll the best?

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Chapter no. 13.2 question no. 12 to 18

Posted by Raghib Reyaz 4 years, 6 months ago

CBSE > Class 12 > Mathematics

0 answers

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The co efficient of y in (ysquare+c/y)is

Posted by Annadi Bhudevi 4 years, 6 months ago

CBSE > Class 12 > Mathematics

2 answers

Diksha Garg 4 years, 6 months ago

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Satvik Arya 4 years, 6 months ago

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Mam how to calculate the adjoint of a matrix??

Posted by Nishtha Yadav 4 years, 6 months ago

CBSE > Class 12 > Mathematics

3 answers

Ayush Vishwakarma?? 4 years, 6 months ago

No mam it is time to learn only ..if you learn by anyone that person is important for you..

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Vivek Chaurasia 4 years, 6 months ago

Where is mam..?

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Ayush Vishwakarma?? 4 years, 6 months ago

Adjoint= transpose of cofactor of each element in the matrix of determinant.for 2×2 order exchange the left diagonal and take opp.charge of the 2nd last diagonal order of matrix.then you got adjoint of 2×2 matrix.

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Sir what is the exactly meaning of differencial equation...

Posted by Priyanka Bhakat 4 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Neetu Yadav 4 years, 6 months ago

Differential equation is related one or more variable along with their derivatives

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What is the value of cos 30 degree

Posted by Madhu Singh 4 years, 6 months ago

CBSE > Class 12 > Mathematics

5 answers

Mandeep Kaur 4 years, 6 months ago

Root 3/2

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Kartikey Bajpai 4 years, 6 months ago

√3/2

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Neetu Yadav 4 years, 6 months ago

Cos 30°=√3/2

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Neeraja Sharma 4 years, 6 months ago

Root3/2

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Aastha Das 4 years, 6 months ago

Root 3 by 2

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Sin2x +cos 5x=

Posted by Robinpreet Kaur 4 years, 6 months ago

CBSE > Class 12 > Mathematics

2 answers

Robinpreet Kaur 4 years, 3 months ago

Derivative

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Diksha Garg 4 years, 6 months ago

What's f ind in it. It's derivative Or any other.

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|sin2x

Posted by Raj Kumar Khillar 4 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Tâlântêd Sûjèét 4 years, 6 months ago

2sinxcosx

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Integral chapter cos 2x cos4x cos6x video

Posted by Prabha Seeniraj 4 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Ankan Rastogi 4 years, 6 months ago

What we have to do in this ques..

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Tan^-1*1/4+tan^-1*8/9

Posted by Karan Arya 4 years, 6 months ago

CBSE > Class 12 > Mathematics

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Tan-1(x/y)-tan-1(x-y) /(x+y)

Posted by Surenthar R 4 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Gaurav Seth 4 years, 6 months ago

Q: Find the value of tan^-1(x/y)-tan^-1(x-y/x+y)

Answer:

tan^-1(x/y)-tan^-1(x-y/x+y)

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Using elementary operations find inverse of A = -1 1 2

Posted by Simar Simar 4 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Diksha Garg 4 years, 6 months ago

Plz give complete matrix . It's no square matrix.

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Sin30 =

Posted by Vansh Choubey 4 years, 6 months ago

CBSE > Class 12 > Mathematics

4 answers

Mandeep Kaur 4 years, 6 months ago

1/2

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Neeraja Sharma 4 years, 6 months ago

1/2

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Robinpreet Kaur 4 years, 6 months ago

1/2

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Shitij Kumar 4 years, 6 months ago

Sin30=1/2

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Let R Be the relation in the set (1234) given by R{(1, 2), (2, 2), (1, 1),(4, 4), (1, 3), (3, 3), (3, 2) }

Posted by Yesh Dev Thakur 4 years, 6 months ago

CBSE > Class 12 > Mathematics

2 answers

Diksha Garg 4 years, 6 months ago

It's only transitive relation but not reflexive because in this another sets of 1R1 , 2R2, 3R3, 4R4 is present but other sets are also present. So it is not reflexive only transitive.

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@ Árpít Patel 4 years, 6 months ago

Transtive and reflexive

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if y= a e^( - 2x) + 5/2( cos x - 2 sin x) find dy/dx + y^(2) + sin x = ? please solve with expansion

Posted by Mikku Goswami 4 years, 6 months ago

CBSE > Class 12 > Mathematics