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Note taken, thanks...
I am making an assumption that one diagram is used for several questions and that for this question
So the question wanted sin/cos(90x) not sin/cos x
Okay, so sorry, maybe it is your wording, but I am a little bit confused. Your saying the answer for both sine and cosine was 90 degrees  x? I'm probably misunderstanding the problem, but I really don't understand why that is. Would it be possible to explain further?
hi zeef,
Sorry posted too late, if you are correct though, then it seems I did have sin and cos backwards, thanks...
Well, I would assume you would have to use the image, as I see no other way of getting the answer unless I am mistaken. Both 7. and 8. seem to be answers you must choose from that I would otherwise think only have one correct answer. However, from my personal results, I see a problem in this...particularly 7. doesn't seem to fit any of the selected answers making me think I'm either doing something wrong (like I have sin and cos confused), or you are only supposed to select the closest answer. Let me explain what I did...
ooooooooh I get it I still use the same numbers but the angle is different Never mind guys it's clear now so the answers would be :
This is the image they talk about do I still use the same numbers?
Hi guys, 