Question

Prove the following
Tan^-1(1/5) + tan^-1(1/7) + tan^-1(1/3) + tan^-1(1/8) = π/4.
*Chapter - inverse trigonometric functions

Answer 1

Solution refer to the attachment...

Answer 2

Answer:

It is proved. See the pic my dear friend!!

Step-by-step explanation:

Formulae used:

• tan⁻¹(x) + tan⁻¹(y) = tan⁻¹((x+y)/ 1-x.y)
• tan⁻¹(1)=π/4.