Question

if Sec A- tanA = 1, then determine tan A​

Answer 1

Answer:

sec A- tanA = 1

secA=1+tanA

(sec A- tanA )²=1

sec²A-2secAtanA+tan²A=1

1+tan²A-2tanA(1+tanA)+tan²A=1

1+tan²A-2tanA-2tan²A+tan²A=1

-2tanA=0

tanA=0

A=0