1 Answer

Antono · Answer 1 · 2024-07-01T23:23:06+0000

Answer:

The measure of the reference angle is 45 degrees and sin(theta) =
$√(2\\)$ /2

Explanation:

The angle 3
$\pi$ /4 found on the unit circle is at the point (-
$√(2\\)$ /2 ,
$√(2\\)$ /2)

since the point is (cos, sin) sin(theta) =
$√(2\\)$ /2

this angle is also equal to 135 degress

since it is in quadrant 2, 180-135 = 45 meaning the reference angle is 45

Unit circle:

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