Question

plz help me fast plz ​

Answer 1

Step-by-step explanation:

2sinAcosA/(1-1+2sin²A).(1-cosA)/cosA

cosA/sinA.(1-cosA)/cosA

(1-cosA)/sinA

{1-(1-tan²A/2)/(1+tan²A/2)}/{2tanA/2/1+tan²A/2}

(2tan²A/2)/(1+tan²A/2)/{2tanA/2/1+tan²A/2}

tanA/2