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orryte congrats then :|nope im damn sure its 12 pi
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orryte congrats then :|nope im damn sure its 12 pi
but but .. it said, "the plate was made by removing a triangular piece"... or somethin like that! ='[ .. I wrote 146 .. then re read the question and changed both answers I thin *sobsniffcry*
what was the solution for the trigo question?? I spent lot of time on it but not sure whether its right.
hey thanks dude. i made a mistake in the signs so i got +63.43Okay. Let me see how far I can recall.. tanx + 1/tanx = (sinx/cosx)+(cosx/sinx) = (sin^2 x + cos^2 x)/sinx.cosx = 1/sinx.cosx Q.E.Dnow,solve for 2/sinx.cosx = (an expression with tanx); 0 < x < 180>> 2*(tanx + 1/tanx) = (RHS) [from the first part]factorize to get (tanx - 1)(tanx + 2) = 0>> tanx = 1 ; tanx = -2>> x =45 ; x = 180 + (-63.43...)= 116.56 ~ 116.6
I could so kill the cie people right now -_- I must've lost 5 marks there!I'm sorry but the plate was not made by removing the triangular piece. In fact, it was not a triangular 'piece' at all - it was a hint. The dotted lines merely showed the radii of the circular plate which met at the ends of chord AB, making it easier for the candidates to use trigonometry to determine its length.
I could so kill the cie people right now -_- I must've lost 5 marks there!
Were everyone's graphs for f(x) and f inverse of x reflected in y=x.
f(x) was 2x + 5 and its inverse was not a reflection in y=x???
part (iii) you will be deducted a mark for not writing answer in 3 s.f.for that question..
part (i) yu had to use cosine rule=14.9
(ii) 45.9
(iii) 145.9
yeah ur rite a=5 for binomial...chill..My answer was 5 in the binomial question but im not so sure. I think I messed up the formula. Can someone else please confirm?
two answers onlyhaha in the trig question, I wrote about 5 different degrees in the range of -180 to 180
Guys I don't remember the GP question at all. I remember the AP part and remember getting a=9 and d=2. If someone remembers the question, can they please post it here, the GP one?
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