Question

If sin∅=4/5 then (1-cos∅) /(1+cos∅) =​

Answer 1

sin∅=4/5

so cos∅=√(1-sin²∅)

cos∅=√(1-(4/5)²)

cos∅=√(9/25)

∴cos∅=3/5

now,

(1-cos∅)/(1+cos∅)= (1-3/5)/(1+3/5)

                          = (2/5)/(8/5)

                          = 1/4 Answer

Answer 2

answer is in photo please check