When I input cos(2.4) into my calculator, I came up with -.7374; how do I dirive an angle from that number. I turned to my table of trigonomic table to find sec A = 2.4 but 2.4 the table only goes to 45 degrees. By subtracting 1.206 (34 degrees) from 2.4 = 1.194 (approx. 33 degrees 6 minutes) I come up with 67 degrees 6 minutes. Is that a proper use of the table?

Question

anonymous · Answer

try cos^-1 in ur calculator

radar · Answer

My calculator comes up with .99912283
Since cosine 0 degrees is 1.0  I would agree with that.