6.2 Trigonometry of Right Triangles
Ideas in this lesson
- Trig ratios in a right triangle
- Special triangles: 30°, 45°, 60°
- Finding an unknown side
- Solving a right triangle
- Applications: angles of elevation and depression
Trig ratios in a right triangle · Worked example
Opposite 3, hypotenuse 5. sin θ?
Answer: \frac{3}{5}
\frac{opp}{hyp}.