1. ©G Dear2008 – Not to be sold/Free to use
Stage 4
Year 9
Trigonometry
Introduction
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©G Dear2008 – Not to be sold/Free to use

2. Hypotenuse Adjacent Opposite Adjacent Opposite
Trigonometry
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Hypotenuse
Adjacent
Opposite
Adjacent
Opposite
Hypotenuse – always opposite the right-angle.
Opposite – always opposite the marked angle.
Adjacent – always next-to the marked angle.

3. Which is the Hypotenuse?
Trigonometry A B C
Which is the Hypotenuse? AC

4. Which is the Hypotenuse?
Trigonometry S R Q
Which is the Hypotenuse? QS

5. Which is the Hypotenuse?
Trigonometry X Y Z
Which is the Hypotenuse? XZ

6. Which is the Hypotenuse?
Trigonometry c a b
Which is the Hypotenuse? c

7. Which is the Hypotenuse?
Trigonometry x y z
Which is the Hypotenuse? x

8. Which is the Hypotenuse?
Trigonometry q p r
Which is the Hypotenuse? q

9. Trigonometry X Y Z
Which is the Opposite? XY

10. Trigonometry X Y Z
Which is the Opposite? YZ

11. Trigonometry g n m
Which is the Opposite? m

12. Trigonometry g n m
Which is the Opposite? n

13. Trigonometry X Y Z
Which is the Adjacent? YZ

14. Trigonometry X Y Z
Which is the Adjacent? XY

15. Trigonometry g n m
Which is the Adjacent? n

16. Trigonometry g n m
Which is the Adjacent? m

17. F α θ G H Opposite α: Adjacent α:
Trigonometry F
Hypotenuse : FH α θ G H
Opposite α:
Opposite θ : GH FG
Adjacent α:
Adjacent θ : FG GH

18. α 13 5 12 θ Opposite α: Adjacent α:
Trigonometry
Hypotenuse : 13 α 13 5 12 θ
Opposite α:
Opposite θ : 12 5
Adjacent α:
Adjacent θ : 5 12