sin(30 degrees)
┌───┬────┬────┬────┐ 45°
│deg|sin |cos |tan │ │'. sin(45°) = 1/√2
├───┼────┼────┼────┤ │ '. √2 = 2/√2
│0 │0 │1 │0 │ 1 │ '. cos(45°) = 1/√2
│30 │1/2 │√3/2│√3/3│ ├──┐ '. = 2/√2
│45 │2/√2│2/√2│1 │ └──┴────────' tan(45°) = 1/1
│60 │√3/2│1/2 │√3 │ 1 45° = 1
│90 │1 │0 │////│ <-- Undefined
└───┴────┴────┴────┘
30°
90-180°│ 0-90° │ sin(30°) = 1/2 sin(60°) = √3/2
sin + │ all + │ ' 2 cos(30°) = √3/2 cos(60°) = 1/2
───────┼─────── √3 │ ' tan(30°) = 1/√3 tan(60°) = √3/1
tan + │ cos + ├─┐ ' = √3/3 = √3
180-270°│270-360° └─┴─────'60°
1
Good luck with your homework :)