Find the value of,`72)^(2`

If a^2+2/a^2=16 , then find the value of (72a^2)/(a^4+2+8a^2) .

If p=sqrt(72-sqrt(72-sqrt(72-sqrt72-......oo))) then find the value of 2p^(2)+1

(72)^(2) = 51 x 4 Find the value of x.

Find the value of cos^(2)72^(@) - sin^(2) 54^(@) .

Find the values of cos 72^@..........

Find the values of 72% of 250 and 37.5% of 800.

If sqrt(2)=1.414 and sqrt(3)=1.732 find the value of sqrt(72)+sqrt(48)^(@)

Let k be the unique positive value satisfying the equation (4k)^(log2)(9k)^(log3)=0, then find the value of (72k).