Evaluate arctan(sin(pi/2))

$\arctan (\sin (\frac{π}{2}))$

The exact value of $\sin (\frac{π}{2})$ is $1$ .

$\arctan (1)$

The exact value of $\arctan (1)$ is $\frac{π}{4}$ .

$\frac{π}{4}$

The result can be shown in multiple forms.

Exact Form:

$\frac{π}{4}$

Decimal Form:

$0.78539816 \dots$

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