Question

pls answer
no spamming...​

Answer 1

Answer:

(sinA*sinA/cosA) /(1-cosA)

sin^2A/(cosA (1-cosA ))

(1-cos^2A)/ (cosA (1-cosA))

(1+cosA)(1-cosA) / (cosA (1-cosA))

(1+cosA)/cosA

(1/cosA)+(cosA/cosA)

secA+1

1+secA proved

.....