Step-by-step explanation:
solution:- from LHS 1-cos²x/sinx
∵ 1-cos²x = sin²x
∴ sin²x /sinx = sinx
from RHS tanx × cosx
∵tanx = sinx×cosx
∴ sinx/ cosx × cosx = sinx
Since, LHS = RHS proved ___
Answer:
The length is 13m.
Step-by-step explanation:

Answer:
I don't understand what should i answer.
The only thing I undrestood was that this is a relation which can be a function.
84÷2.8 =3.0 that's what I did when I learned it