Question

Root 1-sina by 1+ sin a = sec a -tan a

Answer 1

Step-by-step explanation:

given that,

√1-sinA/√1+sin=sec a-tan a

1. LHS: √1-sina √1+sin a
2. do the multiple √1-sin a
3. 1-sin /cos a
4. So, sec a -tan a. hencproof