Question

How do you simplify `sqrt(16cos^2t-16sin^2t)`?

Answer 1

simplify: `sqrt(16cos^2 t - 16sin^2 t)`

Ans: 4cos 2t

Explanation:

`= 4 sqrt(cos^2 t - sin^2 t) = 4sqrt(cos^2 2t) = 4cos 2t`