1. Section 6.1 The Law of Sines

2. Get out your practice test
I will walk around and check it off and answer questions!
If you are all done, start the yellow warm up paper that you should have picked up when you walked in

3. Warm Up

5. You Try! (back side of the WS)

8. EX 1
Solve a triangle for its missing measurements when A = 20° C = 43° an c = 32 inches
430
200
C=32

9. EX 2
A pole tilts towards the sun at an 8 degree angle from the vertical, and it casts a 22-foot shadow. The angle of elevation from the tip of the shadow to the top of the pole is 43 degrees. How tall is the pole?

10. Practice! Try the ODDs of the front page (evens will be homework after the test)

11. What if you are only given 1 angle and 2 sides?
4 different cases can occur
a > h a = h a < h h < a < b

12. a = 22 inches b = 12 inches A = 42 degrees
EX 3: SSA
a = 22 inches b = 12 inches A = 42 degrees
where there is 1 single solution

13. EX 4: SSA a = 15 in b = 25 in A = 85 degrees
where there is NO solution

14. EX 5: SSA a = 12 meters b = 31 meters A = 20.5 degrees
where there are 2 solutions

15. Classwork
Worksheet #12-24 even

17. EX 5:
Find the area of the triangle having the indicated angles and sides:
C = 110°
A = 6in
B = 10in

18. Classwork
Classwork #26 and 28
Hw: finish the worksheet