30:02 in my calculator it is showing 29.06 for angle of refraction i dont think there is an error in my calculator so can u tell how did u get 57 as angle of refraction????
yes she did an error in the calculations its multiplication instead of division: sin-1(sin(40) * 1.3) = 56.68 ----> 57 i hope u knew it before the exam
21:53 it’s incorrect bc the way u did it, u get 29.6 not 57
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30:02 in my calculator it is showing 29.06 for angle of refraction i dont think there is an error in my calculator so can u tell how did u get 57 as angle of refraction????
yes she did an error in the calculations its multiplication instead of division:
sin-1(sin(40) * 1.3)
= 56.68 ----> 57
i hope u knew it before the exam
@@mohammedhatim6083 how? n=sin(i)/sin(r), so sin(r)=sin(i)/n
i need to know my physics paper is in 4 days