The measure of angle O is 7pi/6. The measure of its reference angle is.... ° and sin O is .....

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asked Mar 23, 2019 220k views

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Lofihelsinki · Answer 1 · 2019-03-27T05:27:46+0000

$(7 \pi )/(6)$ is in the 3rd quadrant... (It is also 210 degrees)
To find the reference angle (which is the distance to the x-axis)

$(7 \pi )/(6) - \pi = ( \pi )/(6)$ (or 30 degrees)

sin
$( \pi )/(6) = (1)/(2)$

The measure of angle O is 7pi/6. The measure of its reference angle is.... ° and sin O is .....

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