What is the frequency of f(θ)=sin12tcos5t?

1 Answer
Jun 28, 2018

Period: 2π
Frequency: 12π

Explanation:

Period of sin (12t) --> 2π12=π6
Period of cos (5t) --> 2π5
Period of f(t) --> least common multiple of π6and2π5

π6 .........x(6)(2) ..... --> 2π

(2pi)/5 .........x (5) ......... --> 2π

Period of f(t) is P=2π
Frequency=1P=12π