Csc x · sec x - tan x =
= 1 / sin x · 1 / cos x - sin x / cos x =
= 1 / sinx cos x - sin² x / sin x cos x =
= ( 1 - sin² x ) / (sin x cos x) =
= cos² x / ( sin x cos x ) =
= cos x / sin x = cot x
I would say 23 hope this helps
Answer:
Open circle
Step-by-step explanation:
If the inequality has < or > it is an open circle.
If the inequality has =< or >= it is closed
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