RD Sharma - Mathematics (Volume 1)

Book: RD Sharma - Mathematics (Volume 1)

Chapter: 4. Inverse Trigonometric Functions

Subject: Maths - Class 12th

Q. No. 23 of Very short answer

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23

Answer each of the following questions in one word or one sentence or as per exact requirement of the question:

If , then write the value of x + y + xy.


Given tan-1 x + tan-1 y =π/4


We know that





x + y = 1 – xy


x + y + xy = 1


x + y + xy = 1


1

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