(tg5°-tg50°)/(1+tg5°tg50°)

Question

(tg5°-tg50°)/(1+tg5°tg50°)

Answer 1

(tg5°-tg50°) /(1+tg5°tg50°) = tg (5° - 50°)= tg - 45° = - tg 45° = - 1

Answer 2

(tg5°-tg50°)/(1+tg5°tg50°)=

tg(5°-50°)=tg(-45°)=-1