i really need to know how to simplify this equation for -infinity<t<infinity,

cos(arctan(t))...

thanks

Printable View

- August 29th 2007, 09:20 PMmer1988simplifying inverse and normal trig functions
i really need to know how to simplify this equation for -infinity<t<infinity,

cos(arctan(t))...

thanks - August 29th 2007, 10:43 PMred_dog
Let

So we have to find , knowing .

We have

On the interval , , so we choose the sign

Thus,