Answer
Graphical approximation: $\approx 0.9$
Calculator: $\approx 0.88345$
Work Step by Step
(negative direction = clockwise)
The terminal point of t=$-5.2 $is in quadrant I.
For a point on the unit circle, the x-coordinate is $=\cos t$,
the y-coordinate is $\sin t$,
We estimate (see image below)
$\sin(-5.2)\approx 0.9$
while the calculator shows
$\sin(-5.2)\approx$0.88345465572
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