Answer:
tan( 5π/4)
Explanation:
given tan θ = 1
we know that tan 45° = 1
⇒ θ = 45° = π/4 (this lies in the 1st quadrant)
By identity, tan(θ) = tan(π + θ)
[since θ lies in the 1st quadrant, π+θ will be in the 3nd quadrant]
tan(θ) = tan(π + (π/4))
=tan( 5π/4)