Find a solution with theta in radians (of possible)

1. tan (theta)

3. 3cos (theta)

5. tan (5 (theta) + 7

... ?

1.

tan (theta) 947 theta = arc tan (947) theta = 1.56974

3.

3 cos (theta) = 0.714 3 cos (theta) / 3=0.714/3 theta = arc cos (0.238) theta = 1.33049

5.

tan (5 (theta)) + 7 = - 0.241 tan (5 (theta)) = - 7.241 5 (theta) = arc tan (-7.241) theta = - 1.433562/5 theta = - 0.286712