Calculating angles using trigonometric ratios - Tutorial
math tutorials > calculating angles using trig ratios
The size of an unknown angle in a right-angled triangle can be calculated using the trigonometric ratios.
You will need to use the INV / Shift / 2ndf key on your scientific calculator.
- Label the sides.
- Identify which trig. ratio uses these sides.
- Calculate the angle.
For you to try.