Remembering values of standard angles can be difficult. But with the method shown below you can easily remember the values of standard angles.
First of all write down the values of standard angles.
Then write numbers from 0 to 4 below them as shown below.
Then divide all of them by 4.
Take square root of all of them.
Then write resultant value.
Then write those value in reverse order below them.
Then divide values of first line with second line and write resultant values as third line.
Then write sin, cos and tan on the left hand side as shown below.
So, by this way you can easily remember values of standard angles.
Values of Cosec, Sec and Cot can be found by taking inverse of Sin, cos and tan respectively for the given angle.
Complete table of standard angles is shown below.