cos α tg α - 2sin α
To simplify this expression, we first need to understand the trigonometric identities involved.
We know that:tg α = sin α / cos α
Therefore, cos α tg α becomes:cos α * sin α / cos α= sin α
So, the expression simplifies to:sin α - 2sin α= -sin α
Therefore, cos α tg α - 2sin α simplifies to -sin α.
cos α tg α - 2sin α
To simplify this expression, we first need to understand the trigonometric identities involved.
We know that:
tg α = sin α / cos α
Therefore, cos α tg α becomes:
cos α * sin α / cos α
= sin α
So, the expression simplifies to:
sin α - 2sin α
= -sin α
Therefore, cos α tg α - 2sin α simplifies to -sin α.