Question

(1 - tan^2 (pi/4 + 0))/(1 + tan^2 (pi/4 + 0)) = plz answer this question​

Answer 1

Answer:

sin(2theta)

Step-by-step explanation:

let pi/ 4 + 0 = z

so

(1-tan²z)/(1+tan²z) = cos 2z (standard formula)

put back value of z

cos 2(pi/4 + 0)

= cos ( pi/2 + 20)

= sin(2theta)