![Find the value of the following :- `{:((a)sin((pi)/(6)),(b)cos ((pi)/(4))), ((c)tan((pi)/(3)), - YouTube Find the value of the following :- `{:((a)sin((pi)/(6)),(b)cos ((pi)/(4))), ((c)tan((pi)/(3)), - YouTube](https://i.ytimg.com/vi/vAY8P1rGi_o/maxresdefault.jpg?sqp=-oaymwEmCIAKENAF8quKqQMa8AEB-AH-CYAC0AWKAgwIABABGGIgYihiMA8=&rs=AOn4CLBNTpY19z8l8NPrxC4ThUFKKh5mbw)
Find the value of the following :- `{:((a)sin((pi)/(6)),(b)cos ((pi)/(4))), ((c)tan((pi)/(3)), - YouTube
![let x1=cos(pi/11)cos((2pi)/11)cos((3pi)/11)cos((4pi)/11)cos((5pi)/11) and x2=cos(pi/11)+cos(2pi/11)+cos(3pi/11)+cos(4pi/11)+cos(5pi/11) then show that x1.x2=1/64(cosec(pi/22)-1) let x1=cos(pi/11)cos((2pi)/11)cos((3pi)/11)cos((4pi)/11)cos((5pi)/11) and x2=cos(pi/11)+cos(2pi/11)+cos(3pi/11)+cos(4pi/11)+cos(5pi/11) then show that x1.x2=1/64(cosec(pi/22)-1)](https://d10lpgp6xz60nq.cloudfront.net/q-thumbnail/35469.png)
let x1=cos(pi/11)cos((2pi)/11)cos((3pi)/11)cos((4pi)/11)cos((5pi)/11) and x2=cos(pi/11)+cos(2pi/11)+cos(3pi/11)+cos(4pi/11)+cos(5pi/11) then show that x1.x2=1/64(cosec(pi/22)-1)
![trigonometry - How to prove that: $\tan(3\pi/11) + 4\sin(2\pi/11) = \sqrt{11}$ - Mathematics Stack Exchange trigonometry - How to prove that: $\tan(3\pi/11) + 4\sin(2\pi/11) = \sqrt{11}$ - Mathematics Stack Exchange](https://i.stack.imgur.com/PYq30.png)
trigonometry - How to prove that: $\tan(3\pi/11) + 4\sin(2\pi/11) = \sqrt{11}$ - Mathematics Stack Exchange
![1. Find the reference angle of \dfrac{-11\pi}{3}. 2. If \theta = 18^{circ}, Find the exact value of \theta in radians. | Homework.Study.com 1. Find the reference angle of \dfrac{-11\pi}{3}. 2. If \theta = 18^{circ}, Find the exact value of \theta in radians. | Homework.Study.com](https://homework.study.com/cimages/multimages/16/reference_angle6496670706331306497.png)
1. Find the reference angle of \dfrac{-11\pi}{3}. 2. If \theta = 18^{circ}, Find the exact value of \theta in radians. | Homework.Study.com
![let `x_1=cos(pi/11)cos((2pi)/11)cos((3pi)/11)cos((4pi)/11)cos((5pi)/11)` and `x_2=cos(pi/11)+co... - YouTube let `x_1=cos(pi/11)cos((2pi)/11)cos((3pi)/11)cos((4pi)/11)cos((5pi)/11)` and `x_2=cos(pi/11)+co... - YouTube](https://i.ytimg.com/vi/X1wLA96ExTA/maxresdefault.jpg)
let `x_1=cos(pi/11)cos((2pi)/11)cos((3pi)/11)cos((4pi)/11)cos((5pi)/11)` and `x_2=cos(pi/11)+co... - YouTube
![For which of the quadrant angles 0, pi/2, pi , and 3pi/2 is the sine function equal to 0? | Homework.Study.com For which of the quadrant angles 0, pi/2, pi , and 3pi/2 is the sine function equal to 0? | Homework.Study.com](https://homework.study.com/cimages/multimages/16/screen_shot_2022-09-06_at_11.33.19_pm4725595962387773634.png)