Nice questions. I'm nervously going to say I think the answers are incomplete, and in the case of B3 should be 305 instead of 315.<br /> B1) I got 45, 135, 225, 315<br /> B2) 0, 180, 360<br /> B3) 55, 125, 235, 305<br /> EXT 7) 90, EXT 8) 0, 135, 180, 315, 360<br /> Please check my answers! If you'd like to know how I've got them I'd be happy to upload something.

Really good resource.<br />

Thanks, just what I wanted!!