Question

THE QUESTION OF TRIGONOMETRY IS

Answer 1

cot²@(sec@-1)(sec@+1)+sec²@(sin@-1)(sin@+1)/(sec@+1)(sin@+1)
cot²@(sec²@-1)+sec²@(sin²@-1)/(sec@+1)(sin@+1)
=cot²@tan²@-sec²@(1-sin²@)/(sec@+1)(sim@+1)
=1-1/(sec@+1)(sin@+1)
=0

Answer 2

Answer:

refer to the attachment for the solution.