Attachment 537537537539Attachment 537537537539Hi please help me figure out how to do these quetions. I will put photos of the questions I'm attempting and what I have so far:
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Solving trig equations with CAST diagrams watch
- Thread Starter
- 24-05-2016 15:33
- 25-05-2016 14:33
after finding your first value, x,
For Sin : 180 - x (or 2pi - x)
For cos : 360 - x (or pi - x)
For tan : x+180
Then add 360 to both values to find the next two values. Notice for tan you can just keep adding/removing 180.
The CAST diagram is just a way of representing this, you are always trying to find the size of the angle between the positive horizontal and your second line.