1. 15 19
WARM-UP:
Find the unknown for each diagram:
42o x 32

2. Homework Issues???
(worksheet)

5. Reminder:
SOH CAH TOA

6. Steps to Solve Trig Problems:
1. Determine what types of sides you are 
dealing with (adjacent, opposite, 
hypotenuse).
2. Determine which trig ratio to use (sine, 
cos, tan)
3. Substitute in the values you know
4. Solve for the unkown:
 *Isolate the variable using algebra
 *Use inverse trig ratios to find angles

7. Calculate the measure of the indicated angle.
Refresher Example 1:
Calculate the measure of the indicated angle. 20 25

8. Solve triangle ABC (all angles and sides)
Refresher Ex.2:
Solve triangle ABC (all angles and sides) 8 C A 10 B

9. Outcomes
G3. Solve problems that involve the 
cosine law and the sine law, including 
the ambiguous case.

10. Do you remember these terms???
Angle of Elevation vs Angle of Depression
Do you remember these terms???

11. at which your line of sight changes as you raise your
Angle of elevation – the angle
at which your line of sight
changes as you raise your
eyes to see something above
you.
Angle of depression – the
angle at which your line of
sight changes as you lower
your eyes to see something
beneath you.
What do you notice about angles of elevation and depression?

12. Example 1:

13. Example 2:

14. Example 3:

15. Independent Practice:
Worksheet!