How do you evaluate $arctan (sin (\frac{π}{2}))$ $arctan (sin (pi/2))$ ?

Feb 12, 2016

$\frac{π}{4}$ $pi/4$

begin by evaluating $sin (\frac{π}{2}) = 1$ $sin(pi/2) = 1$

now arctan(1) $= \frac{π}{4}$ $= pi/4$

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