Question

cosa+1_sina/cosa-1+sina=1+(cosa/sina)​

Answer 1

Step-by-step explanation:

cosA+1-sinA/cosA-1+sinA

devide each term by sinA

=cotA+cosecA-1/cotA-cosecA+1

=(cotA+cosecA)-(cosec²A-cot²A)/ cotA-cosecA+1

=(cotA+cosecA)(1-cosecA+cotA)/ (cotA-cosecA+1)

=cotA+cosecA

=(cosA/sinA)+(1/sinA)

=(1+cosA)/sinA