Hi All,

I am trying to figure out how many objects can be seen by my camera. From a previous email that I sent out yesterday, a couple of you have pointed me at tutorials on frustum culling (Thank you).

I am still having problems with the math though and I was wondering if someone would help.

What I know:

Given A and B, I can use atan(B/A) to find the angle in radians.

Given C, and the angle, I can find A with (C * cos(angle)) and I can find B with (C * sin(angle)).

what I don't know is:

Given A, and the angle in radians, How do I find B, and C.

Ex. A = 10, angle in radians = .698132 (through trial and error, I figure out that B = appox. 8.5)

I know C = sqrt( sqr(A) + sqr(B)).

Thanks a lot for any replies,

jpummill

P.S. Sorry for being so long winded... err, long handed