Answer
$ \frac{\sqrt 2}{2}$, $ \frac{\sqrt 2}{2}$, $ \sqrt 2$, and $ \sqrt 2$.
Work Step by Step
Given $\theta=45^\circ$, we have $sin\theta = \frac{\sqrt 2}{2}$, $cos\theta = \frac{\sqrt 2}{2}$, $sec\theta=\frac{1}{cos\theta}=\sqrt 2$, and $csc\theta=\frac{1}{sin\theta}=\sqrt 2$.
