Answer:
see explanation
Step-by-step explanation:
the error in the question is that
sec²x =
≠
, and
csc²x =
≠ 
have been used incorrectly in simplifying the expression
then

= 
= 
=
× 
= 
= tan²x
Answer:
see below
Step-by-step explanation:
x and 80 are adjacent, supplementary angles
Supplementary angles add to 180
x+80 =180 degrees
Subtract 80 from each side
x+80-80=180-80
x=100
Answer:
Hello, ask me.
Step-by-step explanation:
Dm me on discord