23-24 WHICH LAW SHOULD I USE

Presentation

•

Mathematics

•

11th - 12th Grade

•

Practice Problem

•

Easy

•

CCSS

HSG.SRT.D.10, 6.NS.B.3, HSG.SRT.D.11

Standards-aligned

Wendy Croteau

Used 12+ times

FREE Resource

4 Slides • 14 Questions

WHICH LAW
SHOULD I USE?

Solving Oblique Triangles - Law of Sines & Law of Cosines

MULTIPLE CHOICE - OPTIONS

A: Law of Sines only

B: Law of Sines only AFTER testing for # of Triangles

C: Law of Cosines only

D: Law of Sines then switch to Law of Cosines

E: Law of Cosines then switch to Law of Sines

F: None, use Right Triangle Trig (SOH CAH TOA)

When should I use law of sines to solve a triangle?

*You MUST have a angle across from a given side

*You will need to
find the missing
angle first

*You may need to
test for number of
triangles first

When should I use law of cosines to solve a triangle?

*You DONʼT have an angle across from a given side

Drag and Drop

1. Which law should I use for the given triangle?

Drag these tiles and drop them in the correct blank above

Law of Sines only

Law of Sines AFTER testing for #of Triangles

Law of Cosines only

Law of Sines then switch to Law of Cosines

Law of Cosines then switch to Law of Sines

None, use Right Triangle Trig

Drag and Drop

2. Which law should I use for the given triangle?

Drag these tiles and drop them in the correct blank above

Law of Sines AFTER testing for #of Triangles

Law of Cosines only

Law of Sines then switch to Law of Cosines

Law of Sines only

None, use Right Triangle Trig

Law of Cosines then switch to Law of Sines

Drag and Drop

3. Which law should I use for the given triangle?

Drag these tiles and drop them in the correct blank above

Law of Sines AFTER testing for #of Triangles

Law of Cosines only

Law of Sines then switch to Law of Cosines

Law of Sines only

None, use Right Triangle Trig

Law of Cosines then switch to Law of Sines

Drag and Drop

4. Which law should I use for the given triangle?

Drag these tiles and drop them in the correct blank above

Law of Sines AFTER testing for #of Triangles

Law of Sines then switch to Law of Cosines

Law of Sines only

None, use Right Triangle Trig

Law of Cosines only

Law of Cosines then switch to Law of Sines

Drag and Drop

5. Which law should I use for the given triangle?

Drag these tiles and drop them in the correct blank above

Law of Sines AFTER testing for #of Triangles

Law of Sines then switch to Law of Cosines

Law of Sines only

None, use Right Triangle Trig

Law of Cosines only

Law of Cosines then switch to Law of Sines

Drag and Drop

6. Which law should I use for the given triangle?

Drag these tiles and drop them in the correct blank above

Law of Sines then switch to Law of Cosines

Law of Sines only

Law of Sines AFTER testing for # of Triangles

Law of Cosines only

Law of Cosines then switch to Law of Sines

None, use Right Triangle Trig

Drag and Drop

7. Which law should I use for the given triangle?

Drag these tiles and drop them in the correct blank above

Law of Sines then switch to Law of Cosines

Law of Sines only

Law of Cosines only

Law of Cosines then switch to Law of Sines

None, use Right Triangle Trig

Law of Sines AFTER testing for # of Triangles

Drag and Drop

8. Which law should I use for the given triangle?

Drag these tiles and drop them in the correct blank above

Law of Sines then switch to Law of Cosines

Law of Sines only

Law of Cosines only

Law of Cosines then switch to Law of Sines

None, use Right Triangle Trig

Law of Sines AFTER testing for # of Triangles

Drag and Drop

9. Which law should I use for the given triangle?

Drag these tiles and drop them in the correct blank above

Law of Sines then switch to Law of Cosines

Law of Cosines only

Law of Cosines then switch to Law of Sines

None, use Right Triangle Trig

Law of Sines AFTER testing for # of Triangles

Law of Sines only

Drag and Drop

10. Which law should I use for the given triangle?

Drag these tiles and drop them in the correct blank above

Law of Sines then switch to Law of Cosines

Law of Sines only

Law of Cosines only

Law of Cosines then switch to Law of Sines

None, use Right Triangle Trig

Law of Sines AFTER testing for #of Triangles

Drag and Drop

11. Which law should I use for the given triangle?

Drag these tiles and drop them in the correct blank above

Law of Sines then switch to Law of Cosines

Law of Sines only

Law of Cosines only

Law of Cosines then switch to Law of Sines

None, use Right Triangle Trig

Law of Sines AFTER testing for #of Triangles

Drag and Drop

12. Which law should I use for the given triangle?

Drag these tiles and drop them in the correct blank above

Law of Sines then switch to Law of Cosines

Law of Sines only

Law of Cosines only

Law of Cosines then switch to Law of Sines

None, use Right Triangle Trig

Law of Sines AFTER testing for #of Triangles

Drag and Drop

13. Which law should I use for the given triangle?

Drag these tiles and drop them in the correct blank above

Law of Sines then switch to Law of Cosines

Law of Sines only

Law of Cosines only

None, use Right Triangle Trig

Law of Sines AFTER testing for #of Triangles

Law of Cosines then switch to Law of Sines

Drag and Drop

14. Which law should I use for the given triangle?

Drag these tiles and drop them in the correct blank above

Law of Sines then switch to Law of Cosines

Law of Sines only

Law of Cosines only

None, use Right Triangle Trig

Law of Cosines then switch to Law of Sines

Law of Sines AFTER testing for # of Triangles

WHICH LAW
SHOULD I USE?

Solving Oblique Triangles - Law of Sines & Law of Cosines

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