![trigonometry - Solution set for trigonometric equation $\sin(3x) + \cos(3x) = 0$ on the interval $(-\pi, \pi)$ - Mathematics Stack Exchange trigonometry - Solution set for trigonometric equation $\sin(3x) + \cos(3x) = 0$ on the interval $(-\pi, \pi)$ - Mathematics Stack Exchange](https://i.stack.imgur.com/9Rco3.png)
trigonometry - Solution set for trigonometric equation $\sin(3x) + \cos(3x) = 0$ on the interval $(-\pi, \pi)$ - Mathematics Stack Exchange
![A circle has a chord that goes from ( 3 pi)/2 to (7 pi) / 4 radians on the circle. If the area of the circle is 99 pi , what is the length of the chord? | Socratic A circle has a chord that goes from ( 3 pi)/2 to (7 pi) / 4 radians on the circle. If the area of the circle is 99 pi , what is the length of the chord? | Socratic](https://useruploads.socratic.org/FG5kHMGQOmJydj2REjz1_Isosceles%20triangle.png)
A circle has a chord that goes from ( 3 pi)/2 to (7 pi) / 4 radians on the circle. If the area of the circle is 99 pi , what is the length of the chord? | Socratic
SOLUTION: Find all 6 trigonometric ratios (sine, cosine, etc) for the given angle: a.)-pi/2 b.) 2pi/3 c.)7pi/4
How can prove you that:[math]\\\cos(\frac{\pi}{7})-\cos(\frac{2\pi}{7 })+\cos(\frac{3\pi}{7})=\frac{1}{2}[/math]? - Quora
![Find all theta in (-pi, 2pi) that satisfy sin(theta) = 1/2. Hint: There should be two solutions. Which points on the unit circle have y-coordinate 1/2? | Homework.Study.com Find all theta in (-pi, 2pi) that satisfy sin(theta) = 1/2. Hint: There should be two solutions. Which points on the unit circle have y-coordinate 1/2? | Homework.Study.com](https://homework.study.com/cimages/multimages/16/sdcb21387155720690692200.png)