Thread: Trigonometric problem

Hello, I coldnt solve this problem

May you help me?

If y=sin(x)*cos(x) then what is the period?

I know Sin(x) and Cos(x) periods 2pi
Tan(x) and Cot(x) are pi but i dont know how i can solve?

Thanks

Originally Posted by sunrise

Hello, I coldnt solve this problem

May you help me?

If y=sin(x)*cos(x) then what is the period?

I know Sin(x) and Cos(x) periods 2pi
Tan(x) and Cot(x) are pi but i dont know how i can solve?

Thanks

use the double angle identity for sine, note ...

So,
As I learned answer is pi

1\2*sin(2x) is equal to the pi? How i can show?

Thank you for your attentions.

Originally Posted by sunrise

So,
As I learned answer is pi

1\2*sin(2x) is equal to the pi?

you should know the period, , of is

Thank you