need help in calculus, will rate high in return if correct answers tysm!!

1. Give the values of r satisfying the given equations below. (a) tan ' (+ see-1 273 = cos 1 (-1) (b) - see '(T) + ce (VI) + sin (0) =0 2. Consider the following figure. Find the values of 0 and z. 20 40 7 3. A human statue standing on a base column has a height of 4v2it. At point P on the ground, the angle and distance from the ground to the top of the base column is 159 and 8ft, respectively. Find the shortest distance between point / and the head of the statue. 4v2ft Bft P 150