- #1

- 111

- 0

**cos theta=pi/2....hint pi/2 is not an angle.**

## Homework Statement

[tex]\cos\theta=\frac{\pi}{2}[/tex] HINT:The real number [itex]\frac{\pi}{2}[/itex] is

__not__an angle.

## Homework Equations

## The Attempt at a Solution

I tried [itex]0=\cos^{-1} \frac{\pi}{2}[/itex], but that equals no solution.

And if [itex]\frac{\pi}{2}[/itex] were an angle the answer would be 0.

Am I solving this correctly?