A cone of height h and semivertical angle alpha is just held in equilibrium against a smooth vertical wall by a string attached to the apex and tied to the wall at the other end. Calcualate the length of the string.

A cone of height h and semivertical angle alpha is just held in equili

1.	A cone of height h and semivertical angle alpha is just held in equilibrium against a smooth vertical wall by a string attached to the apex and tied to the wall at the other end. Calcualate the length of the string.
Answer» Answer :`l=hsqrt((1+(16"TAN"^(2)ALPHA)/(9))`