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Maths papers(new format)

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holtadit:
I updated the pic to make things clearer.

Vin:
oh thank u so much..
sorry i forgot to tell u so stupid of me i already figured the a) ques..

i wanted b) thanks fo ya time.. :)
sorry again!!

but i liked this method too!!

holtadit:
5 + 4 sin30*0

zero since its zero hours after midnight.  Asnwer is 5 m

Okay for ii)    5 + 4 sin (30*10) = 1.54m

iii)   5 + 4*sin 360 since 12 hours is the max after midnight

 

Vin:
got it till b ii)

but for iii)  5 + 4*sin360   equals 5 thts wat i thought..
but the ans is 9m in ms!!
confused ???

they might hav taken  5  +  4* sin(30 * 3) 3 am/pm
ans to the next is also 3 am n 3 pm..

so basically its trial n error..try till u get the greatest value!

Vin:
nyway sorry another doubt!!

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