1. Trigonometry

2. • How can I find trigonometric ratios for right triangles?

3. • About triangle measurements
• Uses ratios of sides of a triangle to describe an angle
• Sine, Cosine and Tangent
• Abbreviated as sin, cos and tan

4. • Which side is adjacent to angle B?
• Which side is opposite to angle B?
• Where is the hypotenuse?
A
c
b
C a B

5. •
A
c
b
C a B

6. •
A
c
b
C a B

7. •
A
c
b
C a B

8. •

9. • Find sin, cos, and tan for B
B
13
5
C 12 A

10. • Find sin, cos and tan for A and B
A
25
7
C 24 B

11. • Worksheet

12. • How can I use trigonometry to solve triangle problems?

13. • Calculator
• (typically 4 places, round to the nearest ten-thousandth
• sin 45
• cos 36
• tan 23

14. •

17. • A plane is one mile above sea level when it begins to
climb at a constant angle of 3° for the next 60 ground
miles. About how far above sea level is the plane after its
climb?

18. • To guard against a fall, a ladder should make an angle of
75° or less with the ground.
• A. What is the maximum height that a 20-foot ladder can reach
safely?
• B. How far from the building is the base of the ladder at maximum
height?

19. • Worksheet