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Astronomical Distance? What is Parsec ,Astronomical Unit and Light year?

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 Hii good morning to you to understand the true meaning of astronomical distance . We know the distance between earth and sun is about 1.5 × 10^11m. this distance between sun and earth is known as astronomical unit but there is a catch  i.e the distance between sun and eath changes . hence we take average ar mean distance . so , the mean distance between earth and sun is known as Astronomical Unit. hence 1AU= 1.496*10^11m now for Light year it is define as distance taken by light in year  to travell across stars or other galactical object. 1 lY=9.6*10^11m The measurement of parsec is slightly overwhelming  as we knew the distance between sun and earth is 1AU   . now to find the distance between earth and that star we can measure it using the angle subtended (1arcsec)   . we know 1 arcsec=1/3600 1"=1/3600 *  π/180          | (radian) 1"=4.84*10^-6 rad as the angle is very small : R/D=1'' R=1.496*10^11m  1.496*10^11m /D= 4...
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WHY A NUMBER DIVIDE BY ZERO IS UNDEFINE ? or why X/0=UNDEFINE ?

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 Hi I am your teacher Ansh again... hope you like this one also .Subscribe us if you like this one  So lets start.. WHAT IS DIVISION ? To understand todays topic we need to understand the basic  ,What is division?  In simple layman's term  division is to subtract a number (say x) repeatedly  from a number (say y) but in a way that nothing left(or the remainder is equal to zero hence the number of time x is repeated is the value of our division to understand it properly lets take an example:  Say we have to division like 15/3 . hence from above discussion we can say that  15-3-3-3-3-3=0  Here 3 is repeated 5 times so the answer of division is 5 or 100/20 100-20-20-20-20-20=0 Here 20 is repeated 5 times so the answer for this question is 5 SO WHAT IS X/0 THEN? To answer this ..let us say we have an equation 1/0.   Hmm.. lets try to use our basic  definition of division so  1/0=1-0-0-0-0-.....   do you see, it keeps...
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WHY X^0=1? SIMPLE EXPLANATION WITH PROOF.

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Hi I am your teacher for today's question. My name is Anish .Hope this answer would help you to understand this concept. We all know that anything raise power zero =1 but do you questioned yourself why..?  in the ending of this blog you will aware of why is it zero..so stay tuned.  WHAT IS A POWER ? A power of a number is defined as how much time a number should be multiplied to itself like if I say what is 6^3 ? It simply means that 6 should be multiplied by itself 3 times. More examples are 1. 2^2 = 2*2 = 4 2. 3^3 = 3*3*3 =27 Now back to our question... lets us make a table of powers of 2 like, 2^1 = 2 2^2 =2*2= 4 2^3 =2*2*2= 8 2^4 =2*2*2*2= 16 AS SHOWN IN FIG : Now do you notice something... There is this beauty of math's known as P attern Recognition  . There is a pattern.. do you see it . Here when 2^4 is divided by 2 we get 2^3 . As shown is figure Similar condition goes with 2^3 and 2^2 as 2^3 / 2 = 2^2 and  2^2 / 2 = 2^1 .  Hence from this we have no o...
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