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Graph sine functions by adjusting the a, k and c and d values. You can use the slider, select the number and change it, or "play" the animation.
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Trigonometry. Find the Exact Value sin ( (2pi)/3) Step 1. Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Step 2. The exact value of is . Step 3. The result can be shown in multiple forms. Exact Form: Decimal Form:
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The value of sin 2pi/3 can be calculated by constructing an angle of 2π/3 radians with the x-axis, and then finding the coordinates of the corresponding point (-0.5, 0.866) on the unit circle. The value of sin 2pi/3 is equal to the y-coordinate (0.866). ∴ sin 2pi/3 = 0.866.
