Question

sec ∅ (1 - sin ∅ )(sec ∅ + tan ∅ ) = 1. ( prove L.H.S. = R.H.S. )​

Answer 1

Answer:

sec ∅ - sec ∅ sin ∅

= sec ∅ - sin∅ / cos∅

= sec ∅ - tan ∅

so multiplying with sec ∅ + tan ∅

we get sec^2 ∅ - tan^2 ∅

= 1 = RHS