Question

prove this trignometric identity​

Answer 1

Answer:

Divide the numerator and denominator by cos

Answer 2

Answer:

hey

cot a- cos a / cot a + cos a

cos/ sin- cos /1. ( whole upon) / cos/sin+ cos/1

cos- sin cos/ sin ( whole upon) / cos + cos sin / sin

sin gets cancelled from numerator and denominator

we take cos common

cos ( 1-sin) / cos (1+ sin)

again cos gets cancelled from numerator and denominator

1-1/ cosec ( whole upon) / 1+1/cosec

cosec-1/ cosec/ cosec + 1/ cosec

again cosec gets cancelled from numerator and denominator

cosec-1/ cosec +1