4.2 Example
Instructions
In this example we explore the relationships between exact values for trig ratios where the angle is obtuse.
- Watch: Example 4.2e.
- Try: Problem 4.2p.
- Check: Mark and correct.
Length: 4m 54s
![](https://i3.ytimg.com/vi/oCEt9G0c30s/maxresdefault.jpg)
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