Angles(deg)>> | 0 | 30 | 45 | 60 | 90 |
Sin A | 0 | 1/2 | 1/SQRT 2 | (SQRT 3)/2 | 1 |
Cos A | 1 | (SQRT 3)/2 | 1/SQRT 2 | 1/2 | 0 |
Tan A | 0 | 1/(SQRT 3) | 1 | (SQRT 3) | undefined |
Cot A | undefined | (SQRT 3) | 1 | 1/(SQRT 3) | 0 |
Cosec A | undefined | 2 | SQRT 2 | 2/(SQRT 3) | 1 |
Sec A | 1 | 2/(SQRT 3) | SQRT 2 | 2 | undefined |
Note:
Tan A = (Sin A)/(Cos A)
Cot A = (Cos A)/(Sin A)
Cosec A = 1/(Sin A)
Sec A = 1/(Cosec A)
If we remember these and know the values of Sin and Cos A we can derive the rest