physics notes IGCSE extended
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The full form of IGCSE IS
Explanation:
IGCSE stands for the International General Certificate of Secondary Education. It is a two-year programme leading to externally set, marked and certificated examinations from the University of Cambridge. Any student who takes an IGCSE subject will be gaining a qualification that is recognised globally.
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1: (x_7)(x+4)
x=7
x=-4
2 : 2x - 4xy
= 2x ( 1 - 4y)
3 : if we take A as theta then
sec A = 3.5/0.9
sec A slightly equal to 4 degree [it is 3.9 something but we ll use proper angle ]
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