"নিম্নলিখিত নিয়মিত ষড়ভুজ চিত্রের ক্ষেত্রফল খুঁজুন"

Write as fractions in their lowest terms. (i) 0.2, "(ii)" 0.04, "(iii)" 0.008

If a=cos phi cos psi+sin phi sin psi cos delta, b=cos phi sin psi-sin phi cos psi cos delta, "and" c=sin phi sin delta, then a^2+b^2+c^ 2=

Choose the correctly alternative which will improve the part of the sentence given in quotes. The black sky 'was illuminated ' by forked lightning.