Question

above question i need answer fast plzz​

Answer 1

Answer:

Step-by-step explanation:

tan(θ/2) = 1−cosθ/sinθ

Now set  θ= π/4 you get

tan(π/8) = 1−cos(π/4)/sin(π/4) =

1−√2/2/√2/2 = 2−√2/√2