As we know in decimal system ten digits are used. I.e 0 - 9. Subtracting a number from base 10, 100, 1000. An easy way to calculate is just subtracting all digits of a digit from 9 and last digit by 10.For...
In trigonometry generally, we use the right angle triangle why ?? It is because you are standing on a road facing the opposite side of a building. Mark the points * standing place * building bottom...