![Prove that cos pi/65.cos 2pi/65.cos 4pi/65.cos 8pi/65.cos 16pi/65.cos 32 pi/ 65 = 1/64? - Brainly.in Prove that cos pi/65.cos 2pi/65.cos 4pi/65.cos 8pi/65.cos 16pi/65.cos 32 pi/ 65 = 1/64? - Brainly.in](https://hi-static.z-dn.net/files/d02/c360cd004f2e42c472cc7eb74f2bde81.jpg)
Prove that cos pi/65.cos 2pi/65.cos 4pi/65.cos 8pi/65.cos 16pi/65.cos 32 pi/ 65 = 1/64? - Brainly.in
![Let alpha and beta be such that pi<alpha-beta<3pi, If sinalpha+sinbeta=-(21)/(65) and cosalpha+cosbeta=-(27)/(65) , then the value of cos(alpha-beta)/2 is (a) -3/(sqrt(130)) (b) 3/(sqrt(130)) (c) 6/(25) (d) 6/(65) Let alpha and beta be such that pi<alpha-beta<3pi, If sinalpha+sinbeta=-(21)/(65) and cosalpha+cosbeta=-(27)/(65) , then the value of cos(alpha-beta)/2 is (a) -3/(sqrt(130)) (b) 3/(sqrt(130)) (c) 6/(25) (d) 6/(65)](https://d10lpgp6xz60nq.cloudfront.net/web-thumb/412663585_web.png)
Let alpha and beta be such that pi<alpha-beta<3pi, If sinalpha+sinbeta=-(21)/(65) and cosalpha+cosbeta=-(27)/(65) , then the value of cos(alpha-beta)/2 is (a) -3/(sqrt(130)) (b) 3/(sqrt(130)) (c) 6/(25) (d) 6/(65)
![Pi trivia: 65 amazing facts about the mathematical constant | Useless Daily: Facts, Trivia, News, Oddities, Jokes and more! Pi trivia: 65 amazing facts about the mathematical constant | Useless Daily: Facts, Trivia, News, Oddities, Jokes and more!](https://i0.wp.com/www.uselessdaily.com/wp-content/uploads/2020/03/Explore-the-Mysterious-Number-Pi-%CF%80-Cover-Picture-820x461-1.jpg?resize=702%2C461&ssl=1)