1. Naming sides of a Right Angled Triangle Intro How to Identify Hypotenuse Opposite Adjacent Identify Sides in Triangles

2. Trigonometry Trigonometry means “triangle” and “measurement”. Adjacent Opposite x°x°x°x° hypotenuse Each side in a RAT is given a name according to its position R ight A ngle T riangle

3. Hypotenuse The Hypotenuse is the longest side in a Right Angle Triangle ( RAT ). hypotenuse It is opposite the right angle

4. Hypotenuse The Hypotenuse is the longest side in a Right Angle Triangle ( RAT ). hypotenuse It is opposite the right angle

5. Opposite The Opposite side is opposite the selected angle opposite

6. Opposite The Opposite side is opposite the selected angle opposite

7. Opposite The Opposite side is opposite the selected angle opposite

8. Adjacent Two angles are involved. The selected A ngle and the right A ngle. adjacent The A djacent side lies between the two A ngles

9. Adjacent Two angles are involved. The selected A ngle and the right A ngle. adjacent The A djacent side lies between the two A ngles

10. Adjacent Two angles are involved. The selected A ngle and the right A ngle. adjacent The A djacent side lies between the two A ngles

11. 0 12345 6789 C. ÷x 0 + On ² - Ans = √ (-) sin cos tan SHIFT Opp Adj or Hyp 4.2 6 7.3 opp Adj hyp OAH 8.4 5.6 OAH 7.7 OAH 3.4 6.6 OAH 4.5 OAH 7.3 OAH 5.8 OAH 6.1 OAH 2.2 5.7 OAH 3.4 Reset

12. 0 12345 6789 C. ÷x 0 + On ² - Ans = √ (-) sin cos tan SHIFT Opp Adj or Hyp opp Adj hyp Reset OAH8.4 7.7 OAH 3.4 4.2 6 7.3 OAH 4.5 OAH 7.3 OAH 5.8 OAH 6.1 OAH 2.2 5.7 OAH 5.6 OAH 3.4 6.6 OAH