The law of cosines Quiz: answer key
Every answer, with a link to its step-by-step solution
| # | Answer | Level | Solution |
|---|---|---|---|
| 1 | A c ≈ 6.2 | Easy | Solved step by step |
| 2 | a ≈ 11.7 | Easy | Solved step by step |
| 3 | D c ≈ 7.1 | Easy | Solved step by step |
| 4 | a ≈ 13.1 | Medium | Solved step by step |
| 5 | A b ≈ 6.9 | Medium | Solved step by step |
| 6 | c ≈ 4.1 | Medium | Solved step by step |
| 7 | A C ≈ 81.8° | Harder | Solved step by step |
| 8 | C ≈ 87.3° | Harder | Solved step by step |
| 9 | C A ≈ 95.7° | Harder | Solved step by step |
| 10 | B ≈ 48.5° | Harder | Solved step by step |
Grade
Count your right answers and divide by the number of questions: A 90% or more, B 80%, C 70%, D 60%, F below 60%.