If tanA = 5/6 And tanB = 1/11, prove thatA +B = π/4.
Given 
We know that 
= 1
⇒ tan(A +B) = tan π/4
∴A + B = π/4
Hence proved.
14
If tanA = 5/6 And tanB = 1/11, prove thatA +B = π/4.
Given
We know that
= 1
⇒ tan(A +B) = tan π/4
∴A + B = π/4
Hence proved.