For cosine approximation , how to arrive at

Cesar Mcguire

Cesar Mcguire

Answered question

2022-05-09

For cosine approximation , how to arrive at ( 9.11 ) from ( 9.10 ) ?

Answer & Explanation

charringpq49u

charringpq49u

Beginner2022-05-10Added 23 answers

The expression in the brackets can be easily written as
[ 1 M ( M ω i n t K V C O V m 1 ω i n cos ( ω i n t ) ) ]
Now you can use
cos ( ω i n t ) 1 1 2 ω i n 2 t 2

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