RollOnFloorLaughing \(^0^)/ hahahhahahahhaa!!
Saturday, July 26, 2008
How Not To Pass Exams!?
People always complain exams are hard, questions are tough, lecturers are nuts. I once fully agree to the statement, until I came across these...
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4 comments:
Hahhahahaha Chor Wai! This is brilliant!! totally wat v call..THINKIN OUT OF THE BOX..can't stop laughin readin it =D
Hahhahahaha Chor Wai! This is brilliant!! totally wat v call..THINKIN OUT OF THE BOX..can't stop laughin readin it =D
No.1:
tan y = 3/4
= 0.75
y = tan^-1(0.75)
= 36.87
sin y = 3/x
sin 36.87 = 3/x
x sin 36.87 = 3
x = (3)/(sin36.87)
= 4.999999
= 5cm
Am i right? =D
No 2:
[((2)^(1/2)+(8)^(1/2))]^2
= [(2)^(1/2)+2{(2)^(1/2)}]^2
= [3(2)^(1/2)]^2
= (9*2)
= 18
yes, it is not an irrational number.
But, for this example:
[(3)^(1/2)+(16)^(1/2)]^2
= 3+(2)(3)^(1/2)+16
= 19 + 2(3)^(1/2)
= 22.46410162
Therefore, this is an irrational number because 22.46410162 is an irrational number...
It was proved that Tracey is wrong because it is not necessary to get a rational number if we square an irrational number... =D
Another solution for No 1:
x^2 = 3^2 + 4^2
= 9 + 16
= 25
x = 5
:)
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