Itachi SG not tt graph qn is difficult.. jus tt it’s more time consuming and ma huannn as compared to the vector one
DeathEdge SG i second that, when i was vetting the paper. i see wah heng ah the two choose one, one dun need to do graph, straight away do vector qn first den go back to first qn.
technoboy SG One is bisect so = 28 deg. The other angle is alt. angles so also 28 deg. Therefore the triangle is an isosceles triange
snowiesnow SG haha ya 28 degree lai de.. and the X is centre, using the angels at centre is x2 the angle of circumference
redstone SG Got many cases of people failing O level (touch wood).... Go ITE, then went poly, uni and in the end got Honours Degree.
DrTech SG Interesting... I used the Right angle on circumference formed with the diameter. That one easier to prove Anyway, vectors was idiot-proof. Very difficult to make careless mistakes. The most is your explanation for 1 or 2 parts wrong... The graph... too much room for error la... But if you know how to differentiate... maybe your tangent 100% correct
finoq SG I know what I went wrong...instead of 2/3 pi x radius^3, i only squared the radius for the hemisphere. Hence, the no. of toys i got was 38000+... At least got method mark...
