Question

sec^2 45°- tan^2 45°​

Answer 1

Step-by-step explanation:

sec^2 45°- tan^2 45° = 1 ...

Answer 2

Answer:

sec^2 45°- tan^2 45°=(√2)²-1²=2-1=1

(or)

from identity sec²thetha - tan²thetha=1

sec^2 45°- tan^2 45°=1