finish "623 - FST - Chapter 5.4/5.5 - MORE PRACTICE" ws
the first problem is:
1. sin θ = -1/2
-the sine ratio is negative in quadrants 3 and 4.
-look at the 30-60-90 triangle - the 1/2 side is opposite 30 degrees, so the reference angle is 30 degrees.
-a reference angle of 30 degrees in quad 3 (30 past 180) is 210 degrees and in quad 4 (30 back from 360) is 330 degrees
- radians... denominators are 6
7π/6 and 11π/6
the first problem is:
1. sin θ = -1/2
-the sine ratio is negative in quadrants 3 and 4.
-look at the 30-60-90 triangle - the 1/2 side is opposite 30 degrees, so the reference angle is 30 degrees.
-a reference angle of 30 degrees in quad 3 (30 past 180) is 210 degrees and in quad 4 (30 back from 360) is 330 degrees
- radians... denominators are 6
7π/6 and 11π/6
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