The sine and cosine of an angle are the ratio of the opposite side and adjacent side of the reference angle to the hypotenuse side respectively
The completed statement is presented as follows;
The terminal point's horizontal distance to the right of the center of the circle is 0.921875 times as large as the radius of the circle, and therefore: cos(θ) = 0.921875
The terminal point's vertical distance above the center of the circle is 0.390625 times as large as the radius of the circle, and therefore, sin(θ) = 0.390625
Reason:
Known parameters are;
The radius of the circle, R = 3.2 cm
The terminal point's horizontal distance to the right of center of the circle, x = 2.95 cm
The number of times x is larger than R, nₓ is given as follows;
[tex]n_x = \dfrac{2.95}{3.2} = 0.921875[/tex]
Therefore;
[tex]cos(\theta) =\dfrac{x}{R} = 0.921875[/tex]
The terminal point's vertical distance above the center of the circle, y = 1.25 cm
The number of times y is larger than R, [tex]n_y[/tex], is given as follows;
[tex]n_y = \dfrac{1.25}{3.2} = 0.390625[/tex]
The number of times y is larger than R, [tex]n_y[/tex] = 0.390625
Therefore;
[tex]sin(\theta) =\dfrac{y}{R} = 0.390625[/tex]
sin(θ) = 0.390625
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