Launch angle calculator
by Daniel Wedge
27/10/2002

*** MORE GAMES AND PROGRAMS FOR CASIO CALCULATORS AT ***
******** http://www.student.uwa.edu.au/~wedgey *********

This program calculates the angle of elevation required
to launch a projectile from a point Y metres high,
at a given velocity U m/s such that
it will land some distance X m away. If you're interested
in the derivation then email me, my address is available
off my web page (above). Note that it assumes gravity is
10m/s^2 downwards.

Symbols:
-> Assign (the arrow)
tan-1 arctan or inverse tan
^2 square
^4 raise to the power of 4
sqrt square root
*  multiply
/  divide

Size: 81 bytes.

'ANGLE
"U"? -> U
"X"? -> X
"Y"? -> Y
tan-1 ((-2*U^2*X+sqrt(4*U^4*X^2+40*X^2*(2*U^2*Y-10X^2)))/(-20*X^2))