Explain how to find the exact value of sin(570°).
Answer:
-1/2
Step-by-step explanation:
Start by subtracting 360° from 570°, obtaining 210°. These two angles share the same terminal side, located in Quadrant III, and thus share their trig function values.
Similarly, subtract 180° from 210°, obtaining 30°. In Quadrant III, the opposite side is -1, the adjacent side is -√3/2 and the hypotenuse is 2.
The sine of 570° is thus opp/hyp, or -1/2.
The precise value that is given by sin 570° would be:
\(-\frac{1}{2}\)
Given that,
sin 570°
To solve,
We will employ the degree to radian conversion,
θ = θ° × π/180°
To find,
\(570\)° \(= 570\)° × π\(/180\)°
Since radian \(= 19\)π\(/6\)
∵ \(sin 570 = sin(9.9483)\)
\(=\) \(-\frac{1}{2}\)
Thus, the value of sin 570° would be \(-\frac{1}{2}\).
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