How to easily know to values of trigonometry

1.	How to easily know to values of trigonometry
Answer» Ya it\'s one of the tricks. Take 0 1 2 3 4 divide them by 4 and then square root all of them. The values of sin0,30,45,60,90 then cos will be reverse of this and rest of the values can be calculated by using identities There is a easy trick for it but sorry it can\'t be explained here.

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