Question

Find the trigonometric function of:

30°

Answer 1

Angle of measure 30°:

• Hypotenuse = 2 units

• Side opposite 30° = 1 unit

• Side adjacent to 30° = `sqrt3` units

Now use the definitions of trigonometric functions:

1. sin 30° = opposite / hypotenuse = `1/2`
2. cos 30° = adjacent / hypotenuse = `sqrt3/2`
3. tan 30° = opposite / adjacent = `1/sqrt3`
4. cot 30° = 1 / tan 30° = `sqrt3`
5. sec 30° = 1 / cos 30° = `2/sqrt3`
6. csc 30° = 1 / sin 30° = 2