Trigonometric sprint!!can u come first??Calculus Level 3
Challenge:Do the problem within 20 seconds using your common sense. arccos x means inverse cosine of x defined within [-1,1] Consider the equation
arccos x + arccos y + arccos z = 3(pi)
Hence find the value of
9(xy + yz + zx) ???
Once done post how much time did it take you honestly. YOUR TIME STARTS NOW!!!HURRY