Avertical pole ab is erected on a level ground. a man 1.7m tall stands at c ,24m away from foot ,b,of the pole. the angle of elevation of the top a of the pole from the man is 54° . calculate correct to one decimal place the height of the pole

Relatively prime means having no factors in common. i will start by checking if they have the factor "3" in common: it's easy to check: the sum of its digit needs to be divisible by 3: a. 72 and 1157+2=91+1+5=7not true that both are divisible by 3b. 120 and 8351+2=38+3+5=16not true that both are divisible by 3but, they're both divisible by 5! (0 or 5 at the end)not relatively prime  c. 201 and 735 2+1=37+3+5=15 both are divisible by 3! d. 303 and 1041 3+3=61+4+1=6both divisible by 3 therefore the answer is a.