Dear teacher , Please take the class like we can't understand because neega avvallo super topputuckera class edukureenga anna remaining parts e fasta upload pannanum
Thanks for asking. when you take a right angle triangle with hypotenuse of length 1unit, and choose an angle other than the 90degree, the length of the side opposite to the angle you choose is sin theta and length of the side adjacent to the angle you choose is cos theta. I have explained sin theta in one of my previous videos ( ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-yLO4ffcUf4M.html ). Once you understand sin theta you just have to apply it to other side of triangle. you can also refer to :-www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:trig/x2ec2f6f830c9fb89:unit-circle/v/unit-circle-definition-of-trig-functions-1
