alleryThe value of $\sin(\pi/4)$ is:
A$1/2$, the value of the standard sine at thirty degrees
B$\sqrt 3/2$, the standard cosine at thirty degrees here
C$1/\sqrt 2$, the standard sine value at $\pi/4$ on the chart
D$1$, the sine of $\pi/2$ on the clock dial reading
Answer & Solution
Correct answer: C. $1/\sqrt 2$, the standard sine value at $\pi/4$ on the chart
$\sin(\pi/4) = \sin 45^\circ = 1/\sqrt 2$.
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