# silly question - does cos^2 x = (cos x)^2

• November 14th 2009, 05:28 PM
calcbeg
silly question - does cos^2 x = (cos x)^2
That is the whole silly question

Does cos^2 x = (cos x)^2

I guess I am getting tired b/c even the easy ones are confusing me.

Thanks

Calculus Beginner
• November 14th 2009, 05:32 PM
Quote:

Originally Posted by calcbeg
That is the whole silly question

Does cos^2 x = (cos x)^2

I guess I am getting tired b/c even the easy ones are confusing me.

Thanks

Calculus Beginner

Yup
• November 14th 2009, 05:33 PM
skeeter
Quote:

Originally Posted by calcbeg
That is the whole silly question

Does cos^2 x = (cos x)^2

I guess I am getting tired b/c even the easy ones are confusing me.

Thanks

Calculus Beginner

yes ...

$\cos^2{x} = (\cos{x})^2 = (\cos{x})(\cos{x})$