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oooo smart thinking i didnt think of that nice got it

any idea how to find the @? How would you find the angle CAB using sine rule, we need at least one angle right?

I actually think that the 100m is 100metres away from point D we need namu or tommy to clarify

cool thanks Gosh the wordings of these questions are annoying, i have no idea how to do this qn A building AB ius on the top of a terrace. from the point D on the level ground, the angles of elecation of the foot A and the top B are found to be 48o and 65o respectively. when measured...

So basically, the ship is originally at A and after an hour of sailing, the ship is now at C is that correct?

hmm ok I have a problem with the wording in this question A ship sails due east at 20km/h. at certain point A, the bearing of a lighthouse B from her is 045o. after an hour, the bearing of B from the position of the ship C is 015o. find the distance BC correct to 3sig.figs.

I have a sine rule qn... not sure how to do it... A tower AB is 35m high. The angles of elevation of the top D of a hill from the foot A and from the top B of the tower are 46deg and 27deg respectively. Find: a) The distance AD, b) The horizontal distance between D and the tower AB...

cheers for the advice mate :D hope u go well in ur hsc

i could but the questions i put up were just half of the sheet... and i have 6 sheets to do by saturday... I'm screwed...

Oh man... i'm so stuffed... the hw my tutor sets me is sooo hard... anyway would u be able to help with the other questions \right now? or are u gyus still busy doin past papers?

Is there something wrong here?

Re: 回复: Re: Trigonometry MAn and i thought i was studying hard Wow goodluck to you guys and gluck in HSC guys Cheers for all the other help too :D

damn ppl too lazy to reply ahh well

haha anyone to help[ wit the qns? i must admit there's a lot... sorry to disturb ur holidays guys

LOL :P common typing error :P

Lol I actually gave 2b another go an got it... that qn was actually easy... ahh well can anyone answer that textbook quesiton? oh man I'm gonna be here for ages asking hw questions... 1. If tan2A - 2tan2B = 1. Find the possible values of cosA/cosB 2. If tan@ = (2u)/(1-u2), find sec@ and...

I have a few more questions i'm having trouble with and i cant believe that these are the easiest of questions can anyone tell me what textbook has a kinda heartbeat kinda thing?? Ok these are teh questions 1.If cos@ = -4/5 and @ is a positive obtuse angle, find the values of sin @ and tan...

man I'm ssrsly starting to lose my trig concept stuff wth... i dun get it, i get the picture but i dont exactly get how the rest of the @'s turn out to be those answers ...

so we draw a line from the point perpendicular to the x axis in the second quad?

gee i hope people still post on this thread... I have a few questions regarding trig. even though we're in yr 12 now... umm ok... I'm stupid so i dun get this qn... 1. There's the x and y axis, then in the second quad a line i drawn from origin to the coordinates P(-3,4) and the...