Question

Bird 1 starts at position (-4.4, 5.1, 0.8) and Bird 2 starts at position (2.7, - 1.8, 1.1). If both birds fly at the same speed and head toward the origin, which bird will get there first? Find the measurement of theta for both birds. Extra challenge: Find the measurement of phi.

Answer 1

r1 = sqrt (4.4^2 + 5.1^2 + 0.8^2)
do the same thing for r2
the shorter flight wins.
Now you try the angles.