Answer
$G(1)$ = $0$
$G'(0)$ = $0$
$G'(\frac{\pi}{4})$ = $1$
Work Step by Step
$G(1)$ = $\int_1^1tan(t)dt$ = $0$
$G'(0)$ = $tan(0)$ = $0$
$G'(\frac{\pi}{4})$ = $tan(\frac{\pi}{4})$ = $1$
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